Abbreviations for Telecommunication & Multimedia Last updated: 2000-05-19

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A few easy-to-confuse abbreviations from other contexts are added. This list of abbreviations is by no means complete. No
content. If you find an error or if you know an interesting abbreviation that is still missing, please send an
E-mail
to me.
app=application, chem=chemical, geo=geographic, jur=law or act, org=organization or company, phys=physical, soft=so
italics=abbreviation without relation to telecommunication.

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1000BaseT tel
100BaseT tel
10BaseT tel
2G tech
36190 ICN
3COM org
3G tech
3GPP org
3GPP2 org
3R tech
A network tel
A/D tech
A1H7 tel
AAA tel
AAL tel
AAL1 tel
AAL2 tel
AAL3/4 tel
AAL5 tel
AAP tel
AB tel
AB tel
ABC tel
ABI tech
ABR tel
ABR org
ABT/DT tel
ABT/IT tel
AC tel
AC tech
Ac chem
AC/DC tech
AC3 tech
ACA tel
ACB ICN
ACC tel
ACC tel
ACC tel
ACC tel
ACCG ICN
ACCH tel
ACD tel
ACE tel
ACE tech
ACG tech
ACHLRID tel
ACID tech
ACK tel
ACL tel
ACM tel
ACM tel
ACM tel
ACM tech
ACM org
ACOM tel
ACPI tech
ACPM tel
ACPs tel
ACR tel
ACR tel
ACS tel
ACSE tel
ACSF tech
ACT tel
ACTV tech
ACU tel
ACU tel
ACU tech
ACU tech
AD tel
AD tech
ADAMS org
ADAPSO org
ADC tel
ADC tech
ADC org
ADCCP tel
ADCT tech
ADH tech
ADM tel
ADM tel
ADM tech
ADMOSS ICN
ADN tel
ADPCM tech
ADSI tech
ADSL tel
ADTV tech
AEC tel
AEC tech
AECS tel
AES tech
AESA tel
AF phys
AF org
AFC tech
AFI tel
AFM tech
AFP tech
AFRS org
AFS tech
Ag chem
AGC tech
AGCH tel
AGP tech
AH tel
AI tech
AI tel
AIBO tech
AIC tech
AIC tel
AIG tel
AIM tel
AIN tel
AINI tel
AIS tech
AIS tel
AIT tech
AIW tel
AKA -
AKUHW ICN
AL tel
AL tel
Al chem
ALC tel
ALCAP tel
ALCM ICN
ALGOL tech
ALI ICN
ALI B ICN
ALPE tel
ALPU tel
ALU tech
AM tech
AM tel
Am chem
AMA tel
AMB ICN
AMC tel
AMD org
AME tech
AMF org
AMI tel
AMPS tel
AMPS tel
AMR tel
AMS tel
AMTICS tel
AMTS tel
AMX tel
AMX-A ICN
AMX-E ICN
AN tel
ANA tel
ANM tel
ANP tel
ANS tel
ANS tech
ANSER tel
ANSI tech
ANX tel
AO tel
AO/DI tel
AoC tel
AOC tech
AOCC tel
AOCI tel
AOL org
AOPE tel
AP tel
AP tel
AP tech
APC tech
APCM tech
APD tech
APDU tel
API tech
APIC tech
APMT tel
APNG org
APNIC tel
APPC tech
APPN tel
APS tel
APS ICN
AR tech
Ar chem
ARFCN tel
ARIB org
ARFCN tel
ARIB org
ARIN tel
ARP tel
ARPANET tel
ARQ tel
AS tel
AS tech
As chem
ASC tel
ASC tech
ASCE tel
ASCII soft
ASE tel
ASF tech
ASIC tech
ASK tel
ASM tel
ASMG ICN
ASMO tech
ASN ICN
ASN.1 tech
ASN(E) ICN
ASP tel
ASP tel
ASP tel
ASP tel
ASP tel
ASPE ICN
ASR tel
ASU ICN
ASU tech
AT tech
At chem
AT&T org
ATA tech
ATAPI tel
ATB tel
ATC tel
ATE tel
ATIS tel
ATM tel
ATM tech
ATM tech
ATM-PDU tel
ATM-SDU tel
ATM230 ICN
ATM25 tel
ATMP tel
ATMRA tel
ATOP ICN
ATP chem
ATR org
ATRAC tel
ATSC org
ATT tel
ATV tech
ATVEF org
AU tel
AU tel
AU ICN
Au chem
AUB ICN
AUB(B) ICN
AUC tel
AUN tel
AUI tel
AUP tech
AVI tech
AVD tech
AVVID tel
AWA tel
AWC tel
AWGN tech
awk tech
B chem
B network tel
B-CDMA tel
B-ICI tel
B-ISDN tel
B-ISSI tel
B-ISUP tel
B-MAC tel
B-NT tel
B-NT1 tel
B-NT2 tel
B-OSF tel
b-reps tel
B-SNI tel
B-TA tel
B-TE1 tel
B-TE2 tel
B-UNI tel
B3ZS tel
B8ZS tel
BA tel
BA tech
BA tech
BA org
Ba chem
BACP tel
BAF tech
BAIC ICN
BAOC ICN
BAP ICN
BASIC soft
BB tel
BBC org
BBCC org
BBS tel
BC tel
BC tel
BC org
BCC tech
BCC ICN
BCC tel
BCC ICN
BCCH tel
BCD tech
BCE tel
BCH tel
BCH code tech
BCIE tel
BCOB tel
BCPN tel
BCSM tel
BCT ICN
BCU tel
BDC tel
BE tel
Be chem
BE(R) tel
BECN tel
BEMA ICN
BER tel
BERT tel
BEU tech
BFC tel
BF tel
BFI tel
BGAK tel
BGN tel
BGP tel
BGR ICN
BGREJ tel
Bh chem
BHCA tel
BHHCA tel
BHTML tel
Bi chem
BIAS ICN
BIB tel
BIC-Roam ICN
BIGIS tel
BIND tel
BIOS tech
BIP tel
BIST tech
BISON ICN
bit tech
Bk chem
BMAP tel
BML tel
BMML ICN
BN tel
BN org
BNF soft
BNHO tel
BOC org
BOD tel
BOIC ICN
BOIC-exHC ICN
BOM tel
BOS org
BPDU tel
BPON tel
BPR tech
bps tel
BPSK tel
BR tel
Br chem
BRA tel
BRAN tel
BRD -
BRE tech
BRG tech
BRI tel
BS tel
BS tel
BS tel
BSA org
BSC tel
BSC tel
BSCI tel
BSD tech
BSI tel
BSIC tel
BSM tech
BSN tel
BSS tel
BSS ICN
BSSAP tel
BSSGP ICN
BSSMAP tel
BSSOMAP tel
BSSTE tel
BST tel
BSU tel
BT tel
BT tech
BT org
BTA -
BTAG tel
BTO tech
BTS tel
BTSE tel
BTSM tel
BUS tel
BzA ICN
C chem
C network tel
C/I tech
C/N tech
C/R tech
C-4 tel
C-OSF tel
C++ soft
CA tel
CA tel
CA tel
CA tel
CA tel
CA geo
Ca chem
CAC tel
CAC tel
CAC tel
CAD tech
CAE soft
CAE tech
CAFIS org
CAGR -
CAI tel
CAI tel
CAI soft
CalBUG org
CallP tel
CALS tech
CAM tech
CAM tech
CAM ICN
CAMA tel
CAME tech
CAMEL ICN
CAMS ICN
CAO soft
CAP tech
CAP tech
CAP tech
CAP tel
CAP ICN
CAP ICN
CAPI soft
CAPTAIN org
CAR tel
CAS tel
CASE soft
CASE tech
CAT tech
CAT tel
CATNET tel
CATV tel
CATV tel
CB tel
CB tel
CB tech
CB -
CBC tel
CBCH tel
CBDS tel
CBMI tel
CBOP org
CBR tel
CBR tech
CBRSE tel
CBS tel
CBT tel
CBT soft
CC ICN
CC tel
CC tel
CC tel
CC tel
CC tel
CC tech
CC tech
CCB tel
CCBS tel
CCC tel
CCC tel
CCC4 tech
CCCH tel
CCD tech
CCF tel
CCF tel
CCG tech
CCH tel
CCIE tel
CCIR tel
CCITT tel
CCNA tel
CCR tel
CCS tel
CCS7 tel
CCS7E tel
CCTrCH tel
CD tech
Cd chem
CD-FMV tech
CD-G tech
>CD-I tech
CD-R tech
CD-ROM tech
CD-ROM XA tech
CD-RW tech
CD-V tech
CDA tel
CDA jur
CDB tech
CDC4 tech
CDDI tel
CDE soft
CDF tel
CDF tel
CDLC tel
CDMA tel
CDPD tel
CDR tel
CDS tel
CDSL tel
CDT tel
CDV tel
CDV tech
CDVT tel
CE tel
CE tech
CE tech
CE org
Ce chem
CEAT soft
CEBus tel
CEC org
CEC org
CECS tech
CEI tel
CEIR tel
CELP tel
CEN tel
CENELEC tel
CEO -
CEP tel
CEPS tech
CEPT org
CEQ tel
CER tel
CERN org
CERT org
CES tel
CESA org
CF tel
CF tech
Cf chem
CFB ICN
CFNRc ICN
CFNRy ICN
CFU ICN
CG tech
CG tech
CGI tel
CGI tel
CGI soft
CGM tech
CGSM tel
CGU tech
CHAP tel
CHILL tel
CHRP tech
CHT tel
CHV tech
CI tel
CI tel
CI tel
CI tel
CI tel
CI tel
CI -
CIAC tech
CIC tel
CID tel
CID tel
CID soft
CIDR tel
CIF tech
CIFF tech
CIM tel
CIM tel
CIM tech
CIO -
CIP
CIR tel
CIR tech
CISA tech
CISC tech
CISPR org
CIU tel
CIX org
CL tel
Cl chem
CLAD tel
class A service tel
class B service tel
class C service tel
class D service tel
CLEC org
CLI tel
CLI tel
CLIP tel
CLIP tel
CLIR tel
CLK tech
CLKE1B ICN
CLLM tel
CLNP tel
CLNS tel
CLP tel
CLR tel
CLS tel
CM tel
CM tel
Cm chem
CMA tel
CMB ICN
CME
CMI tel
CMI tech
CMIP tel
CMIS tel
CMISE tel
CML tech
CMM tel
CMM tech
CMOS tech
CMOT tel
CMR tel
CMR tel
CMS tel
CMS tech
CMX tel
CN tel
CN tel
CNC tech
CNE tel
CNE tel
CNE org
CNG tech
CNI tel
CNIP tel
CNIR tel
CNM tel
CNN org
CO tel
Co chem
COBOL soft
COC tel
COCOM org
CODEC tel
COFIP tel
COLI tel
COLP tel
COLR tel
COM soft
COM tel
CONS tel
COPA jur
COPS tel
CORBA tel
CORE tel
CorNet-NQ tel
CoS tel
COS tel
COS -
COSE soft
COSF tel
COSS soft
COT tel
COTS tel
COU tel
COUB ICN
CP tel
CP tel
CP tech
CP113 ICN
CPCH tel
CPCS tel
CPCS-H tel
CPCS-PDU tel
CPCS-SDU tel
CPCS-T tel
CPCS-UU tel
CPE tel
CPE tech
CPG tel
CPI tel
CPI tel
CPS tel
CPSC org
CPSS tel
CPTWG tel
CPU tech
CPN tel
CR ICN
CR tech
Cr chem
CRC tel
CRC soft
CRES
CRF tel
CRP8 ICN
CRM tel
CRM tech
CRP tel
CRP app
CRS app
CRT tech
CRT org
CS tel
CS tel
CS tech
CS tel
CS tel
Cs chem
CS-1 tel
CSB tech
CSC ICN
CSCW app
CSDN tel
CSE ICN
CSELT org
CSG app
CSH tech
CSI tel
CSI tel
CSLB tel
CSM tel
CSMA/CA tel
CSMA/CD tel
CSN tel
CSO -
CSP tel
CSPDN tel
CSR tel
CSR tel
CSS tech
CSS tech
CSTA tel
CSU tech
CSU org
CSV soft
CSYP ICN
CT ICN
CT tel
CT tel
CT tel
CT tech
CT tech
CT1 ICN
CT1 ICN
CTD tel
CTD tech
CTI tel
CTIA org
CTM tel
CTO tech
CTP tel
CTR ICN
CTX tel
CU tech
CU tel
Cu chem
CUG tel
CUM tel
CUN tel
CV ICN
CVCF tech
CVP tel
CVP tech
CVSDM tel
CW ICN
CW tech
CX tech
D channel tel
D network ICN
D/A tech
D-AMPS tel
D-VHS tech
D2-MAC tel
D2M ICN
D2M ICN
D8 tech
D900/D1800 ICN
DA tel
DAB tel
DAC tech
DACS tel
DAF tel
DAI tech
DAL tel
DAM tel
DAMA tel
DAP tel
DARC tel
DARPA org
DAS tel
DAS ICN
DAS tech
DASD tech
DASE tel
DAT tech
DAT tech
DAVIC org
dB phys
DB soft
DB tech
Db chem
DB/DC soft
DB2 soft
DBA tel
DBA soft
DBM tech
DBMS soft
DBR tel
DBS tel
DC tech
DC tel
DCA tel
DCC tel
DCC tel
DCC tech
DCC tech
DCCH tel
DCE tel
DCE tel
DCE tech
DCE soft
DCF tel
DCF tel
DCF soft
DCF77 tech
DCH tel
DCI tech
DCIM tel
DCN tel
DCO tel
DCOM soft
DCP tel
DCRC tel
DCS tel
DCS tel
DCS tel
DCS org
DCT soft
DCT-1900 tel
DCT-900 tel
DCT-WUPE tel
DD soft
DDC tech
DDF tel
DDI tel
DDK soft
DDN org
DDR tel
DDR -
DDS tech
DDS tech
DEC tel
DEC org
DECT tel
DECT tel
DEE tel
DEN tel
DES soft
DFB tech
DFB -
DFFG tel
DFP tech
DFSK tel
DGPS tel
DHCP tel
DHO tel
DIB tech
DID tel
Digital8 tech
DIMM tech
DIN tel
DINA tech
DIS tech
DISM tech
DIU ICN
DIU ICN
DIX tel
DL tel
DL tel
DLC tel
DLC tel
DLCI tel
DLD tel
DLD tech
DLE tel
DLL soft
DLSw tel
DLU tel
DLUB tel
DM tech
DM -
DMA tech
DMAC org
DMC tel
DMCS tel
DMD tel
DME soft
DMI soft
DMIF tech
DMR tel
DMT tech
DMTF org
DMZ tel
DN tel
DN tel
DNA tel
DNA chem
DNC tech
DNIC tel
DNPA tel
DNS tel
DNS tel
DNS chem
DNU tel
DOA soft
DoCoMo org
DOCSIS tel
DOD org
DOM soft
DoS tel
DOS soft
DOS/V soft
DP tel
DP tel
DP tech
DP tel
dpa org
DPC tel
DPCM tech
DPE soft
DPI tel
dpi tech
DPLL tel
DPMS tech
DPNSS tel
DPP soft
DPPS ICN
DPRAM tech
DPT tel
DQDB tech
DQPSK tech
DRAM tech
DRC tel
DRCU tel
DRF tel
DRI tel
DRNC tel
DRNS tel
DRP tel
DRS tel
DRX tech
DS tel
DS tel
DS/SS tech
DS-0 tel
DS-1 tel
DS-1C tel
DS-2 tel
DS-3 tel
DS-4 tel
DS-CDMA tel
DS-SS tel
DS0 tel
DS1 tel
DS1C tel
DS2 tel
DS3 tel
DS4 tel
DSA tel
DSB tel
DSB tech
DSC tel
DSCH tel
DSD tech
DSE tel
DSG tel
DSI tel
DSL tel
DSLAM tel
DSMA ICN
DSMCC tech
DSMX tel
DSN org
DSP tel
DSP tech
DSR tel
DSRR tel
DSS soft
DSS ICN
DSS tech
DSS-PC tel
DSS1 tel
DSS2 tel
DST tech
DST ICN
DSTN tel
DSU tel
DSU tel
DSU tel
DSVD tel
DSx tel
DTAG org
DTAP tel
DTCH tel
DTCP tel
DTCP tech
DTD tech
DTE tel
DTG tel
DTG tel
DTGSM tel
DTLP ICN
DTM org
DTMF tel
DTP app
DTPR app
DTT tel
DTV tech
DTX tel
DÜE tel
DUP tel
DV tech
DV tech
DV tech
DVB tech
DVB-T tech
DVD tech
DVD tech
DVD-Audio tech
DVD-R tech
DVD-R/W tel
DVD-RAM tech
DVD-ROM tech
DVD+RW tech
DVHS tech
DVI tech
DVMRP tel
DWDM tel
DWF soft
DWG soft
DXF soft
DXI tel
Dy chem
E tel
E tel
E network tel
E-GSM tel
E-OSF tel
E-TACS tel
E1 tel
E2 tel
E3 tel
E4 tel
E5 tel
EA tel
EA tech
EAI tel
EAP tel
EAROM tech
EBPP app
EBSG tel
EBU org
EBXA soft
EC app
EC tel
EC org
ECC tel
ECC tech
ECC tech
ECC tel
ECCS org
ECI tel
ECL tech
ECM tel
ECMA org
ECP tech
ECR app
ECR tel
ECT tel
ECTF org
EDA tel
EDC
EDC tel
EDC tel
EDF tel
EDFA tel
EDGE tel
EDI tel
EDIFACT tech
EDO DRAM tech
EDP tel
EDP tech
EDSL ICN
EDSS.1 tel
EDTV tech
EEC tel
EEPROM tel
EFCI tel
EFF org
EFR tel
EFS tel
EFT tel
EFTPOS tel
EHF tel
EHS tech
EHSA org
EI app
EIA org
EIAJ org
EIDE tech
EIR tel
EIR tel
EIRP tel
EISA tech
EIR tel
EIRP tech
EKTS tel
EL tel
EL tel
ELAN tel
ELFEXT tel
ELI tel
EM tel
EMC tech
EMF tel
EMI tech
EML tel
EMML ICN
EMS tech
EMSP
EMV tech
EMX ICN
ENDAK tel
EOC tel
EOF soft
EOM tel
EOS app
EOT tech
EP app
EPD tel
EPIC tech
EPLD tech
EPROM tech
EPS tech
EPSF soft
ER tel
Er chem
ERAN tel
ERICA tel
Erl tel
ERM app
ERMES org
ERP tech
ERP app
ES tel
Es chem
ES-IS tech
ESA tech
ESA org
ESD tech
ESF tel
ESN tech
ESP tel
ESP tel
ESPRIT org
ET tel
ETACS tel
ETAG tel
ETB tel
ETC tel
ETEAE tel
ETR tel
ETS tel
ETSI org
ETX tel
EU org
Eu chem
EUC tech
EUC soft
EVRC tel
EWSD ICN
EWSP ICN
EWSX V1 ICN
EWSX V2 ICN
EWSX V3 ICN
EWSXpress ICN
EXC BER tel
Exif soft
F chem
F-bus tel
F1 OAM tel
F2 OAM tel
F3 OAM tel
F4 OAM tel
F5 OAM tel
FA tel
FA tech
FAC tel
FACCH tel
FACH tel
FALC tel
FALC tel
FAP tel
FAQ -
FAS tel
FAST tel
FAT soft
FAU tel
FAUSCH tel
FAW tel
FB tech
FC-AL tech
FCAPS tel
FCC org
FCCH tel
FCRAM tech
FCS tel
FDB ICN
FDD tel
FDD tech
FDD-DS tel
FDD-MC tel
FDDI tel
FDG tel
FDIS tech
FDL tel
FDM tel
FDMA tel
FDU tel
FE tel
Fe chem
FEAL tel
FEBE tel
FEC tel
FECN tel
FED tech
FEI tel
FEKAT ICN
FEP tech
FEPROM tech
FER tel
FERF tel
FET tech
FEXT tel
FFH tel
FFP
ffs -
FFT soft
FH tel
FH tel
FH -
FH/SS tel
FHCDMA tel
FHE tel
FHS soft
FIB tel
FICOM ICN
FIFJ tel
FIFO tech
FIS tel
FISC app
FISU tel
FIT tel
FITL tel
FLAM tel
FLC tech
FLEX-TD tel
FLI tel
flops tech
FLT -
FM tel
FM tel
FM tel
Fm chem
FMB tel
FMBS tel
FMC tel
FMI tel
FMS app
FMT tel
FMV tech
FMX tel
FN tel
FNA tech
FO soft
FOA tech
FoIP tel
FORTRAN soft
FP tech
FPGA tech
FPH tel
FPL tel
FPLMTS tel
fps tech
FPU tech
FQDN tel
FR tel
FR tel
FR tech
FR ICN
Fr chem
FRAD tel
FRAD tel
FRAM tech
FRAPI soft
FRC tel
FRE tel
FRS tech
FS tel
FSA tel
FSAN tel
FSF org
FSK tel
FSL ICN
FSM soft
FSN tech
FTA tel
FTA tech
FTAM tel
FTAM tel
FTM tel
FTP tel
FTP soft
FTTB tel
FTTC tel
FTTH tel
FTTT tel
FU tech
FUNI tel
FuKo tel
FuVST tel
FVST tel
FW tech
FW tel
FWA tel
FwVt tel
FXM1 ICN
GA soft
Ga chem
GaAS IC tech
GAD tel
GADP tel
GAIN ICN
GAP tel
GAP tel
GARP tel
GBE tech
Gb/s tech
Gbit/s tech
Gbps tech
GC tel
GC-DFB tech
GCC tel
GCRA tel
GCU ICN
Gd chem
GDI soft
GDMO tel
GDT soft
GE tech
Ge chem
GEA tel
GFC tech
GFD tech
GFR tel
GFSK tech
GGSN tel
GHz tel
GI tel
GIB soft
GIF soft
GII tech
GIS app
GK tel
GKS tech
GLB soft
GMN tel
GMR head tech
GMSC tel
GMSK tech
GMT -
GMX tel
GMX-E tel
GMX-O tel
GND tech
GNP tel
GNP -
GNSS tel
GNU soft
GOSIP tel
GP tel
GPA tel
GPE tel
GPIB tech
GPL soft
GPRS tel
GPS tech
GPS tech
GPSI tech
GPSU tel
GPV ICN
GR tel
GR tel
GS ICN
GSA tel
GSC tel
GSM tel
GSM soft
GSM G1 tel
GSM R tel
GSN tel
GT soft
GT -
gTLD tel
GTP tel
GTT soft
GUI soft
GVI tech
GVNS tel
GVPN tel
GVRP tel
GW tel
GW soft
GWS tech
H chem
H.110 tel
H.323 tel
H/PC tech
H/W tech
H0 tel
H1 tel
H10 tel
H11 tel
H12 tel
H3 tel
H4 tel
HA tel
HAD tel
HATS org
HAVi tech
HBT tech
HCP tech
HCP soft
HCS tel
HD-MAC tel
HDB3 tel
HDLC tel
HDM soft
HDML tel
HDSL tel
HDTP tel
HDTV tech
HDX tel
He chem
HEC tel
HEMT tech
HEO tech
HF tel
HF tel
Hf chem
HFC tel
Hg chem
HGK geo
HHO tel
Hi8 tech
HiFD tech
HIPERLAN tel
HIPPI tech
HIU tel
Hk tech
HLC tel
HLR tel
HLRID tel
HMX tel
HNA tech
HNN ICN
HO tel
Ho chem
HOC tel
HOLB tel
HomePNA org
HomeRF tel
HON tel
HPA tel
HPC tech
HPC Act jur
HPCC tech
HPFC tel
HPLMN tel
HPT tel
HR tel
HRFWG tech
HRP tech
Hs chem
HSATM tel
HSCSD tel
HSM tel
HSN tel
HSSI tel
HSTR tel
HTML soft
HTTP tel
HTU tel
HU tel
HW tech
HWT ICN
I chem
I-ETS tel
I-NMC tel
I/O tech
IA tel
IA soft
IA-64 tech
IAA tel
IAB org
IAB org
IAC tech
IACB tel
IAHC org
IAI org
IAM tel
IANA org
IARA ICN
IARAMA ICN
IARSTAT ICN
IBM org
IBS tel
IBT tel
IC tel
IC tech
ICA tech
ICANN org
ICB ICN
ICC tel
ICC tel
ICCR tel
ICCS ICN
ICD tel
ICE tech
ICE tech
ICF tel
ICH tel
ICI tel
ICI tel
ICM tel
ICMP tel
ICN org
ICN tech
ICO tech
iCOMP tech
ICOT org
ICP tel
ICR tel
ICSA org
ID tel
IDAPI tech
IDE tech
IDE tech
IDEA soft
IDEF soft
IDF tel
IDF tel
IDI tel
IDLC tel
IDN tel
IDO org
IDS tech
IDSL tel
IDT soft
IDT tel
IDU tel
IE tel
IEAT tel
IEC org
IEEE org
IEEE 1394 tech
IEI tel
IETF tel
IESG tel
IF tech
IF soft
IFC soft
IFIP org
IFRB org
IGES soft
IGMP tel
IGRP tel
IGSN tel
IIJ org
IIOP tel
IIR tel
IISP tel
IKE tel
IKZ50 tel
ILM org
ILMI tel
ILTF
IMA tel
IMAP tel
IMAP4 tel
IMBE tel
IME soft
IMEI tel
IMHO -
IMS tech
IMSI tel
IMT tel
IMT-2000 tel
IMT2000 tel
IMTC org
IMTS tel
IMX tel
IN tel
In chem
INAP tel
INAP tel
INDAS ICN
INI tel
INMARSAT org
INS tel
INS tel
INS-P tel
INTAP org
INTELSAT org
IOC tech
IOC -
IOCP tel
IOG tel
IOI tel
IOM ICN
IOMA ICN
IOP tech
IOP:AUC ICN
IOP:SCDV ICN
IOP:SCDX ICN
IP tel
IP tel
IP tel
IPA tel
IPAT tel
IPBX tel
IPC tel
IPC tech
IPComp tel
IPCP tel
IPG tech
IPH tel
IPL soft
IPMcast tel
IPng tel
IPP tech
IPR -
IPS tech
IPSEC tel
IPSU tel
IPv4 tel
IPv6 tel
IPX tel
IPX/SPX tel
IR tech
Ir chem
IRC tel
IrDA org
Iridium org
IRL -
IRR tech
IRTF org
IrTran-P tel
IS-41 tel
ISA tech
ISAKMP tel
ISAM soft
ISAPI soft
ISC tel
ISC tel
ISC org
ISCI tel
ISDB tel
ISDN tel
ISDN-UP tel
ISL tech
ISM tel
ISM band tech
ISO tech
ISOC org
ISP tel
ISR tech
ISS tel
ISSI tel
ISTS ICN
ISTV tel
ISUP tel
IT tech
ITA tech
ITAA org
ITC tel
ITP tel
ITS tel
ITS ICN
ITSEC tel
ITU org
ITU-T org
ITU-TS org
Iu tel
Iub tel
Iur tel
IUS tech
IV tech
IVAT tech
IVR tel
IW-MSC tel
IWE tech
IWE-8 ICN
IWF tel
IWFCE tel
IWU tel
IX tel
IXC tel
J1 tel
J2 tel
J3 tel
J4 tel
J5 tel
JAVA soft
JAVATEL tel
JBZS tel
JCA org
JCL tech
JDC org
JDK soft
JDSF org
JIH tel
JINI tel
JNX org
JPEG org
JPIX tel
JSMR tel
JTAG ICN
JTM tech
K chem
kb tech
kB tech
KB tech
kb/s tech
kbit/s tech
kbps tech
KDC tel
kHz phys
KN tel
Kr chem
ksps tel
KTH21 tel
KTN tel
KVST tel
KVZ ICN
kW phys
L-AIS tel
L-FEBE tel
L-FERF tel
L1 tel
L2 tel
L2F tel
L2M tel
L2R ICN
L2RBOP tel
L2RCOP tel
L2TP tel
L3 tel
L3C tel
La chem
LAC tel
LAC tel
LAC tel
LACOD/LACODE ICN
LAI ICN
LAMA tel
LAN tel
LANE tel
LAPB tel
LAPD tel
LAPD tel
LAPDm tel
LAPV5 tel
layer 1 tel
layer 2 tel
layer 3 tel
layer 4 tel
layer 5 tel
layer 6 tel
layer 7 tel
LB tel
LBO tel
LC tel
LCD tech
LCD tel
LCN tel
LCP tel
LCR tel
LCT tel
LCT tel
LCU tel
LCV tel
LD tel
LD tech
LD-CELP tel
LDAP tel
LDCP tel
LE tel
LE-ARP tel
LEA org
LEAF tel
LEARP tel
LEC tel
LEC tel
LECID tel
LECS tel
LED tech
LEO
LEO tech
LES tel
LEU tel
LEX tel
LF tech
LF tech
LF tel
LI tel
LI tel
LI tel
LI tel
Li chem
LIBA tel
LIC tel
LIC tel
LICM ICN
LIFO tech
LIG tel
LIJ tel
LIU tel
LL tel
LL -
LLA tel
LLC tel
LLC tel
LLC/SNAP tel
LLI tel
LM tel
LM tech
LMCS tel
LMDS tel
LMI tel
LMKAT tel
LMN tel
LMSI tel
LMT tel
LMU tel
LNA tech
LND tel
LNP tel
LNS tel
LOC tel
LOF tel
LOOS tel
LOP tel
LOS tel
LPC tel
LPD tel
LPLMN tel
LPS tel
LR tel
Lr chem
LRC tech
LRU tel
LS tel
LSB tech
LSC tel
LSSGR tech
LSSU tel
LST soft
LSTR tel
LSU tel
LT tel
LTC ICN
LTE tel
LTG ICN
LTGB ICN
LTGM ICN
LTM tel
LTP tel
LTP tel
LTU ICN
LU tel
LU tel
LU ICN
Lu chem
LUP tel
LVDS tech
LVT tech
LWL tel
LWS ICN
LX tel
LXM tel
M tel
M-SSP tel
M&TS tel
M1 tel
M2 tel
M3 tel
M4 tel
M5 tel
MA tel
MA tel
MAC tel
MAC tel
MACF tel
MACN tel
MAE tel
MAF tel
MAF tel
MAH tel
MAI tel
MAN tel
MAP tel
MAPDU tel
MAPOS tel
MAR tel
MAR tel
MAU tel
Mb tech
MB tel
MB tech
Mb/s tel
MB(B) ICN
Mbit/s tel
MBOK tech
Mbps tel
MBC tel
MBS tel
MBU tel
MC tech
MCA tel
MCB tel
MCC tel
MCD tel
MCEF tech
MCF tel
MCH tel
MCH ICN
MCI tel
MCI tel
MCI tech
MCN tel
MCNS tel
Mcps tel
MCR tel
MCR tel
MCS tel
MCSN tel
MCU tel
MCU tech
MD tel
MD tech
Md chem
MDC tel
MDD tech
MDF tel
MDI tel
MDS tel
MDT tel
MDT tel
MDU tel
ME tel
ME tech
MED tel
MEM tech
MEO tel
MExE tel
MF tel
MF tel
MF tel
MFA tel
MFC tel
MFC:R2 ICN
MFL tel
MFS tel
MFS ICN
MFN tel
Mg chem
MGCP tel
MGT tel
MHEG org
MHN tel
MHP tech
MHS tel
MHS tel
MHU tel
MHU tel
MHz phys
MI tel
MIA tel
MIB tech
MIB -
MIC tel
MIC ICN
MIC org
MIC tech
MID tel
MID tel
MII tech
MIME tel
miniDV tech
MINT tel
MIPS tech
MISE tel
MIT soft
MIT org
MLM tech
MLP tech
MLS tech
MM ICN
MMAC tel
MMB tel
MMC tel
MME tel
MMF tel
MMI tech
MML tel
MMM tel
MMO org
MMU tech
MMX tech
MN org
MN -
Mn chem
MNAP tel
MNC tel
MNCC tel
MNCC-SAP tel
MNMASE tel
MNO tel
MNRF tel
MNRU tel
MNS tel
MNSMS-SAP tel
MNSS-SAP tel
MO tel
MO tech
Mo chem
MO/PP tel
MOC tel
MOC tel
MOD tech
MODEM tel
MODIF tel
MOSPF tel
MOU -
MP tel
MP ICN
µP tech
MPC ICN
MPCC tech
MPDU tel
MPEG org
MPEG1 tech
MPEG2 tech
MPLA tel
MPLS tel
MPM ICN
MPOA tel
MPTY ICN
MPU tech
MP3 tech
MRC tel
MRN tel
MRTG tel
ms phys
MS tel
MS tech
MS tech
MSA tech
MSB tel
MSB tech
MSC ICN
MSCM tel
MSCP tel
MSCU tel
MSF org
MSG tel
MSI tech
MSIN tel
MSISDN tel
MSM tel
MSN tel
MSO tel
MSOH tel
MSP tech
MSP tel
MSRN MN
MSS tel
MSS tel
MSSP tel
MST tel
MSU tel
MT tel
MT tel
Mt chem
MT/PP tel
MT0 tel
MTA tel
MTA
MTA -
MTBF tech
MTC tel
MTC tel
MTD tech
MTE tel
MTH soft
MTIE tel
MTM tel
MTP tel
MTP tel
MTP-1 tel
MTP-2 tel
MTP-3 tel
MTS tel
MTS tech
MTS tech
MTSC tech
MTTF tech
MTTR tech
MTX3 tech
MU tel
MU tech
MULDEX tel
MUMS tel
MUP tel
MUX tel
MVIP tel
mW phys
MW phys
MWIF org
MX tel
N chem
N-AMPS tel
N-ISDN tel
N-ISUP tel
N-NNI tel
N-OSF tel
N-PCS tel
N-PDS tel
N-SLT tel
NA -
Na chem
NACD tel
NADC org
NAM tel
NAMPS tel
NANOG org
NAP tel
NAP tel
NAPT tel
NASA org
NAT tel
NATS tel
NB org
NB tel
NB tech
Nb chem
NBAP tel
NBS tel
NBT tel
NC tel
NC tel
NC tel
NC tel
NCC ICN
NCC IBM
NCC tel
NCCI tel
NCH tel
NCK tel
NCSA org
Nd chem
NDC tel
NDIS soft
NDS tech
NDUB tel
NE tel
NE tel
Ne chem
NEF tel
NEML tel
NER tech
NET tel
NetBEUI tel
NEXT tel
NF tel
NF tech
NFAS tel
NFS tel
NFS tel
NFS org
NGI tel
NGSO tech
NGSO FSS tel
NHRP tel
NI tel
NI tel
NI ICN
Ni chem
NIC tel
NIC tel
NIC tel
NiCD tech
NIH org
NiMH tech
NIN tel
NIST org
NITBC tel
NITZ tel
NLA tel
NLM org
NLS soft
NM tel
NMC tel
NMC tel
NMF org
NMI tech
NML tel
NMP tel
NMR tech
NMR ICN
NMS tel
NMSI tel
NMR phys
NMT org
NN tel
NN -
NNI tel
NNTP tel
No chem
NOC tel
NOP tel
NOP tech
NP tel
Np chem
NPC tel
NPCI tel
NPI tel
NRT tel
NRT geo
nrt-VBR tel
NRZ tech
NS tel
NSA org
NSAP tel
NSAPI tel
NSDU tel
NSP tel
NSP tel
NSPIXP tel
NSS tel
NT tel
NT tech
NT tel
NT -
Nt tel
NT1 tel
NT2 tel
NTBA tel
NTM tel
NTP tel
NTPM ICN
NTS tel
NTT org
NUA tel
NUC ICN
NUI tel
NUP tel
NW tech
nW phys
O chem
O&M tel
O.N.E ICN
O.N.E UP ICN
OA tel
OA -
OA&M tel
OADM tel
OAL ICN
OAL tech
OAL -
OAM tel
OBIX tech
OBN tel
OBR x ICN
OC-12 tel
OC-3 tel
OC-3c tel
OC-48 tel
OCANEQ tel
OCB ICN
OCCCH tel
OCD tel
OCI ICN
OCN tel
OCU tel
ODAGEN ICN
ODB ICN
ODCCH tel
ODCH tel
ODI tel
ODL soft
ODMA tel
ODT tel
ODTCH tel
OEM tech
OFC tech
OFD tech
OFDC
OFDM tel
OFFIT
OFSB tel
OH tel
OI21 tel
OLE tech
OLR tech
OLT tel
OLTB tel
OLTM1 tel
OM tel
OMAP tel
OMC tel
OMC-B ICN
OMC-S ICN
OMCR ICN
OMCS ICN
OMFFC tech
OMG tel
OMI tel
OML tel
OMP ICN
OMP-B ICN
OMP-S ICN
OMS ICN
OMT ICN
OND tel
ONU tel
ONUB tel
OOF tel
OOK tech
OOS tel
OPC tel
OPC tech
OPSEC tel
OR tel
ORACH tel
ORB tel
OS ICN
OS soft
Os chem
OSA tel
OSD soft
OSF org
OSF tel
OSF tel
OSI tel
OSI-RM tel
OSM soft
OSP tel
OSPF tel
OSR x ICN
OSR5 ICN
OSS tel
OSS tel
OSS tel
OSS tel
OSU tel
OTDR tech
OURS tel
OVA -
OVP tel
OVST tel
P chem
P-AIS tel
P-bus tech
P-FEBE tel
P-FERF tel
P-GSM tel
P-MP tel
P-NNI tel
P-RDI tel
P/PC tech
PA tel
PA tech
Pa chem
PABX tel
PACCH tel
PACS tel
pACT tel
PAD tel
PAD tel
PAGCH tel
PAL tech
PAM tel
PAM tech
PAMR tel
PAP tel
PAR tel
PAS tech
PAT tel
Pb chem
PBC tech
PBCCH tel
PBN tel
PBR tel
PBS tech
PBX tel
PC tech
PC tel
PC tel
PC tech
PC tech
PC-card tech
PCB tech
PCCH tel
PCH ICN
PCI tel
PCI tel
PCI tech
PCM tel
PCMCIA org
PCMCIA -
PCMIF tech
PCN tel
PCO tel
PCP tech
PCP ICN
PCPOS ICN
PCR tel
PCR ICN
PCS tel
PCS tel
PCS tel
PCS tel
PCSI org
PCU tel
PD tel
Pd chem
PDA tech
PDC tel
PDC tel
PDC tel
PDC org
PDC-P tel
PDCA -
PDCH tel
PDF soft
PDH tel
PDM tech
PDN tel
PDN tel
PDP tel
PDP-11 tech
PDS tel
PDS tel
PDS tech
PDU tel
PECL tech
PEDC org
PEI tel
PEM tel
PEP tech
PFM tel
PG tel
PGP soft
PGS tel
PH tel
PHI tel
PHS tel
PHY tel
PhyCH tel
PI tel
PI tel
PIAF org
PIAFS tel
PICS tel
PID tel
PID tech
PIN soft
PIN diode tech
PINX tel
PIP
PK ICN
PKI tech
PKS ICN
PL tech
PL tel
PL/SQL tel
PLC tel
PLCC tech
PLCP tel
PLL tel
PLL tech
PLM tel
PLM ICN
PLMN tel
PLN tech
PM tel
PM tech
PM tech
PM tech
PM ICN
Pm chem
PM/CC tel
PMC tel
PMD tel
PMM ICN
PMP tel
PMP tech
PMR tel
PMX tel
PN tel
PN tel
PNCH tel
PNE tel
PNG tel
PNG soft
PNNI tel
PNO tel
PNP tel
Po chem
POC org
POCE tel
POCSAG org
POF tel
POH tel
POI tel
POLL tel
PON tel
POP tel
POP tel
POP3 tel
POR geo
POS -
POS tel
POT tel
POTS tel
pp tech
PP tel
PPC tel
PPC tech
PPCH tel
PPD tel
ppm phys
PPGA tech
PPM tel
PPM tel
PPM ICN
PPP tel
pps tel
pps tech
PPS tel
PPSC tel
PPT tel
PPTP tel
PQFP tech
PR tel
Pr chem
PRACH tel
PRBS soft
PRI tel
PRISM tel
PRM tel
PROM tech
PROVNO ICN
PRS tel
PS tel
PS tel
PS tel
PS tech
PS tel
PSA tel
PSAP tel
PSC tel
PSDL tel
PSDN tel
PSI tech
PSK tel
PSM tel
PSM tel
PSP tech
PSPDN tel
PST tel
PSTN tel
PSU tech
PT tel
Pt chem
PTA ICN
PTA org
PTC tel
PTCH tel
PTG tel
PTI tel
PTM tel
PTO org
PTP tel
PTT org
PU tel
PU tech
Pu chem
PVC tel
PVC tel
PVC chem
PVCC tel
PVPC tel
PWB tech
PWM tel
Q.2144 tel
Q.2931 tel
Q.750-Q.754 tel
Q.811 tel
Q.812 tel
Q.823 tel
Q.824 tel
Q3 tel
Q3PS tel
QA tel
QAF tel
QAM tech
QD tel
QD3E tel
QDU tech
QMR tech
QoS tel
QoSS tel
QPSK tech
Qs tel
QSIG tel
Qx tel
R tel
RA ICN
RA tel
RA -
Ra chem
RAB tel
RACE org
RACH tel
RADIUS tel
RADSL tel
RAE tel
RAI tel
RAM tech
RAN tel
RANAP tel
RAND soft
RAS tel
RAU tel
Rb chem
RBB tel
RBC tel
RBER tel
RBOC org
RBS tel
RCAP tech
RCC tel
RCCB tel
RCI tel
RCI tech
RCS tel
RCS
RCU tel
RD-LAP tel
RDBMS soft
RDF tel
RDI tel
RDS tel
RDT tel
RDU ICN
Re chem
RED tel
REL tel
RELP tel
RES tel
RET tel
REVC tel
RF tel
Rf chem
RFA
RFC tel
RFC tel
RFCH ICN
RFCN tel
RFFG tel
RFI tech
RFI tel
RFLB tel
RFU -
RG tel
Rh chem
RHS tech
RIC tel
RIC tech
RICE tel
RIES tel
RIP tel
RIP tech
RIPE/NCC tel
RISC tech
RITL tel
RITM tel
RIU tel
RKW tel
RLC tel
RLC tel
RLC soft
RLCP tel
RLI tel
RLP tel
RLR tech
RLS tel
RM tel
RM tel
RM tel
RMC tel
RMI tel
RMON tel
Rn chem
RNC tel
RNO tech
RNR tel
RNS tel
RNS tel
RNSAP tel
RNT tel
RNTI tel
ROBO tech
ROI tel
ROI -
ROM tech
ROS tel
ROSE ICN
ROT tech
RP ICN
RPC tel
RPCU tel
RPE-LTP tel
RPI tech
RPOA org
RR tel
RR ICN
RR tel
RRC tel
RRM tel
RRSM tel
RS tel
RS tel
RS tel
RSAK tel
RSATM tel
RSCP tel
RSE ICN
RSIP tel
RSL tel
RSOH tel
RSS tel
RSSI tech
RST tel
RSU
RSVP tel
RSVP -
RSZI tel
RT tel
RT tel
RT tech
RT-VBR tel
RTC tel
RTCP tel
RTFM tech
RTOS tech
RTOT tel
RTP tel
RTS tech
RTSE tel
RTSP tel
Ru chem
RWS tel
RX tech
RXAMCO tel
RXB tech
RXF tech
RXMC tech
RXPA tech
RXU tech
RZ tech
RZ tech
S chem
S.100 tel
S.200 tel
S.300 tel
S/MIME soft
S/N tech
S/P tel
S-AAL tel
S-OSF tel
SA org
SA tech
SAA tel
SABM tel
SAAL tel
SAC tel
SACCH ICN
SACE tel
SACF tel
SAF tel
SAG tel
SAG org
SAI tech
SAM tel
SAMP tel
SAP tel
SAP tel
SAPI tel
SAR tel
SAR-SDU tel
SAS tel
SAT tech
SAW tech
SB tech
SB soft
Sb chem
SBC tel
SBR tech
SBR tel
SBR tel
SBS ICN
SBS org
SC tel
SC tel
Sc chem
SCAP tech
SCCH tel
SCCP tel
SCE tel
SCEG org
SCEP tel
SCF tel
SCF tel
SCG tel
SCH ICN
SCI tel
SCI ICN
SCI tech
SCL ICN
SCLC tel
SCM tel
SCM tech
SCM ICN
SCM ICN
SCM tech
SCM tech
SCN tel
SCN ICN
SCO tel
SCO tel
SCOC tel
SCP tel
SCR tel
SCR tel
SCRC tel
SCSA tech
SCSI tech
SCSP tel
SCT tel
SCTP tel
SCTS tel
SCU tel
SD ICN
SD tel
SD tech
SDC tel
SDC tel
SDCCH ICN
SDDPFC ICN
SDF tel
SDH tel
SDH-OM tel
SDHT tel
SDK tech
SDL tel
SDL tel
SDL ICN
SDM tel
SDM tel
SDMA tel
SDMI org
SDMT tel
SDP tel
SDR -
SDRAM tech
SDSL tel
SDT tel
SDU tel
SE tel
SE tel
Se chem
SEF tel
SEF tel
SEFS tel
SEG org
SEP tel
SEP tech
SES tel
SESAME tel
SET tel
SFD tel
SFH tel
SFN tel
Sg chem
SGC tel
SGML tel
SGSN tel
SHF tel
SHTTP tel
SI tel
SI tel
SI tech
SI tel
Si chem
SIB tel
SIB ICN
SID tel
SID tel
SIE tel
SigVC tel
SigVCC tel
SILT ICN
SIM tel
SIMP ICN
SIMUX ICN
SIN tel
SIO tel
SIO tel
SIOS tel
SIP tel
SIPO tel
SIR tel
SIR tel
SIS tech
SISA ICN
SIVAPAK ICN
SK tel
SKIP tel
SL ICN
SLA tech
SLC tel
SLCA tel
SLCD tel
SLI tel
SLIM tel
SLIP tel
SLM tel
SLM tel
SLMA tel
SLMB tel
SLMD tel
SLP tel
SLP tel
SLR tel
SLT tel
SLT tel
SLT tel
SLTM tel
SM tel
SM tel
SM tel
SM tech
Sm chem
SM-AL tel
SM-RL tel
SMA ICN
SMAE tel
SMAP tel
SMASE ICN
SMB tel
SMB tech
SMC tel
SMD tech
SMD tech
SMD ICN
SMDS tel
SME tel
SMF tel
SMG tel
SMIL tech
SML tel
SMN tel
SMP tel
SMPP tel
SMS tel
SMS ICN
SMS tech
SMS MT tel
SMS P-P tel
SMS-C tel
SMSC tel
SMSCB tel
SMSU ICN
SMT tel
SMT tel
SMT tech
SMTP tel
SMU tel
SMUC ICN
SMUD ICN
SN tel
SN tel
SN tel
SN tel
SN tel
SN tel
SN org
Sn chem
SNA tel
SNAP tel
SNAPI ICN
SNCF org
SNDCF tel
SNDCP tel
SNG tel
SNI org
SNI tel
SNI tel
SNMP tel
SNP tel
SNR ICN
SNR tech
SOA tel
SOA tel
SOC tech
SOH tel
SOHO org
SOHO tech
SONET tel
SOR tel
SP tel
SP tel
SP tel
SP tech
SPC tel
SPC tech
SPCK tel
SPD org
SPE tel
SPF tel
SPI tel
SPI tel
SPI tech
SPM ICN
SPMX tech
SPNP tel
SPSU tech
SPU tel
SPU tel
SPVC tel
SPVCC tel
SPX tel
SQL soft
SQS ICN
SR tel
Sr chem
SRES ICN
SRF tel
SRI tel
SRNC tel
SRNS tel
SRP tel
SRS tel
SRTS tel
SRU tel
SS ICN
SS tel
SS tel
SS#7 tel
SS7 tel
SSAP tel
SSB tech
SSCF tel
SSCOP tel
SSCS tel
SSD tech
SSD ICN
SSF tel
SSG ICN
SSG tel
SSI tel
SSL soft
SSM tel
SSM tech
SSN tel
SSNC tel
SSO tech
SSP tel
SSP tel
SSS ICN
SSU tel
ST tel
ST tel
STAT tel
STB tel
STC tel
STC tel
STE tel
STF tel
STM tech
STM tel
STM-1 tel
STM-16 tel
STM-4 tel
STM-N tel
STMA tel
STMEKA tel
STMR tech
STOT tech
STP tel
STP tel
STS ICN
STS-3c tel
STS-N tel
STTP org
SU tel
SU tel
SUA tel
SUGR tel
SUN tel
SUS tel
SVC tel
SVC tel
SVC tel
SVC tel
SVHS tech
SVN soft
SVP tel
SW soft
SWAP tel
SWAP-CA tel
SWM soft
SWOT -
SWR tech
SXC tel
SXC ICN
SYB tech
SYD ICN
SYP ICN
SYPD ICN
T/NT tel
T-1 tel
T-2 tel
T-3 tel
T-4 tel
T1 tel
T2 tel
T3 tel
T4 tel
TA tel
TA tech
Ta chem
TAC tel
TAC tech
TAC soft
TACS tel
TADS ICN
TAF tel
TAF tel
TAP tel
TAPI tel
TB tech
Tb chem
tbd -
tbr tel
TC tel
TC tel
TC tel
TC org
Tc chem
TCAP tel
TCB tech
TCB soft
TCB tel
TCC tel
TCCB tel
TCE tel
TCH tel
TCH tel
TCI tel
TCI tech
TCM tel
TCO -
TCP tel
TCP/IP tel
TCSEC tech
TCU tel
TCU tel
TD-CDMA tel
TD-SCDMA tel
TDD tel
TDM tel
TDM/STM tel
TDMA tel
TDMA/TDD tel
TDP tel
TDP tech
TDR tech
TE tel
TE tel
Te chem
TE-RSVP tel
TE1 tel
TE2 tel
TED ICN
TEI tel
TEMS ICN
TETRA tel
TF tel
TF tel
TFA tel
TFCI tel
TFI tel
TFI tel
TFP tel
TFTS tel
Th chem
THX tech
TI soft
TI org
Ti chem
TIA tel
TID ICN
TID tel
TIE tel
TIES tel
TIFF soft
TIM tel
TINA tel
TINA-C tel
TIS ICN
TIU tel
Tl chem
TLA tel
TLD tel
TLLI tel
TLM tel
TLS tel
TLV tel
TM tel
TM tel
Tm chem
TMB ICN
TMC tech
TMC tel
TMDS tech
TME tel
TMN tel
TMP ICN
TMR tech
TMRP tel
TMS tel
TMS ICN
TMS tel
TMSI tel
TN tel
TNS tel
TOD soft
TOG tech
TOH tel
TON tel
TP tel
TP tech
TPC tel
TPDU tel
TPID tel
TPS tel
TPU tel
TPU soft
TR tel
TR tech
TR tech
TRAC ICN
TRAMOS ICN
TRAU ICN
TRC tech
TRX tech
TS ICN
TS tel
TS tech
TS tel
TSAG org
TSAP tel
TSAPI tel
TSDI tel
TSG ICN
TSI tech
TSM tech
TSO tech
TSO soft
TSPI tel
TSR soft
TSS tel
TSS soft
TTC org
TTCN tech
TTE tech
TTL tel
TTL tech
TTNet tel
TTS tech
TTT tel
TTU tel
TTY tel
TU tel
TU tel
TU org
TUCN tel
TUP tel
TV ICN
TV tech
TVC tel
TWS ICN
TX tech
TXCU ICN
TXS tel
TXU ICN
U chem
U-ADSL tel
U-MSC tel
UA tel
UAN tel
UART tech
UAS tel
UAWG tel
UBR tel
UCAID org
UDC ICN
UDF tel
UDI tel
UDI tel
UDLR tel
UDP tel
UDT tel
UDT soft
UE tel
UER tel
UHF tel
UI tech
UID ICN
UIM tel
UIS tel
UISF tel
UL tech
UME tel
UME -
UMF tel
UML tech
UMPTS tel
UMTS tel
UN tel
UNEQ tel
UNI tel
UOS tel
UP tel
UPC tel
UPCH tel
UPI tech
UPnP tech
UPS tech
UPS org
UPT tel
URA tel
URL tel
US -
USA -
USB tech
USC tel
USC ICN
USF tel
USIM tel
USSD ICN
USTAT tel
UTC phys
UTOPIA ICN
UTP tech
UTRA tel
UTRAN tel
Uu tel
UUENCODE soft
UUI tel
UUS tel
UUS1 ICN
UUT tech
V chem
Video8 tech
VAD ICN
VAD tel
VADSL tel
VAN tel
VAP tel
VAR -
VAS -
VBN tel
vBNS tel
VBR tel
VBR-NRT tel
VBR-RT tel
VBS tel
VC tel
VC tel
VC tel
VC tel
VC-4 tel
VC-AIS tel
VC-FERF tel
VC-n tel
VC-RDI tel
VCC tel
VCC tel
VCCE tel
VCI tel
VCL tel
VCN tel
VCO tech
VCPU tech
VCTTP tel
VDE org
VDI tel
VDSL tel
VDU tel
VE tel
VF tel
VGCS tel
VHDSL tel
VHE tel
VHF tel
VHS tech
VID tel
VLAN tel
VLE -
VLF tel
VLR tel
VLSI tech
VM tel
VM tech
VM-C tel
VMS tel
VMSC ICN
VMSC ICN
VMZ ICN
VNK ICN
VOB tech
VoBB tel
VoD tel
VoDSL tel
VoFR tel
VoIP tel
VOT ICN
VP tel
VP-AIS tel
VP-FERF tel
VP-RDI tel
VPC tel
VPCE tel
VPCI tel
VPDN tel
VPG tel
VPLMN tel
VPI tel
VPL tel
VPN tel
VPT tel
VPTTP tel
VRC tel
VRML soft
VRRP tel
VRU tel
VSA tel
VSAT tech
VSB tel
VSC tel
VSN tel
VSt tel
VSWR tech
VT tel
VTM org
VTOA tel
VTP tel
W chem
W-CDMA tel
W-LAN tel
W-PBX tel
W3C org
WABI soft
WAIS tel
WAN tel
WAP tel
WARC org
WCCP tel
WDM tel
WebDAV tel
WFQ tel
WGS phys
WINS tel
WIPO org
WLAN tel
WLL tel
WLT tel
WM -
WIMP tech
WIN tel
WLL tel
WM -
WM -
WML tel
WRC org
WS tech
WSF tel
WSSF tel
WTA tel
WWW tel
WYSIWYG soft
X.25 tel
X.400 tel
X.75 tel
X121 tel
XC tel
XCDR tech
xDSL tel
Xe chem
XID tel
XLD ICN
XLink tel
XML soft
xSCP tel
XUM tel
XUS tel
Y chem
Y-500 tel
YAHOO soft
Yb ICN
Yb chem
Z.E.N.works tel
ZAW tech
ZBU org
ZC tel
ZCS tel
ZGS tel
Zk chem
ZMF ICN
Zn chem
ZVSt tel
ZZF org
ZZK tel

© 1998,1999,2000 Siemens AG, ICN M NT 13, Elmar Dünßer

ons for Telecommunication & Multimedia Last updated: 2000-05-19

use abbreviations from other contexts are added. This list of abbreviations is by no means complete. No guarantee is given for the corr
an error or if you know an interesting abbreviation that is still missing, please send an

hem=chemical, geo=geographic, jur=law or act, org=organization or company, phys=physical, soft=software, tech=technical, tel=tele
n without relation to telecommunication.

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[Gigabit] Ethernet physical layer specification [1 Gbps]
Ethernet physical layer specification [100 Mbps]
Ethernet physical layer specification [10 Mbps]
second generation
EWSX node (common numbering with Newbridge)
computer, communications & compatibility
third generation
third generation partnership project
third generation partnership project 2
reamplification, reshaping, retiming
1958: 1st public radio network in Germany [150 MHz, 16 physical channels]
analog to digital conversion/converter
ATM adaptation layer 1 for HDLC/CCS7 protocol
authentication, authorization & accounting
ATM adaptation layer
ATM adaptation layer type 1 (good for class A service)
ATM adaptation layer type 2 (good for class B service)
ATM adaptation layer type 3/4 (good for class C and D service)
ATM adaptation layer type 5 (good for class C and D service)
alternative access provider
answering machine (Anrufbeantworter)
access burst
administration and billing center
application binary interface
available bit rate
Amtliches Bayerisches Reisebüro
ATM block transfer / delayed transmission
ATM block transfer / immediate transmission
authentication center
alternating current (Wechselstrom)
actinium / Actinium / lat. actinium / 89 protons
AC/DC converter (Gleichrichter)
5-channel audio system [Dolby]
adaptive channel allocation
ATM230 control block
account card calling
automatic congestion control
ATM crossconnect
area communications controller
ATM control and clock generation unit
associated control channel
automatic call distribution
advanced coding efficiency
antenna coupling equipment
auxiliary clock generator
authentication center home location register identity
atomicity, consistency, isolation, durability
acknowledgement [character]
asynchronous connectionless link
access control module
address complete message (B-ISUP)
accumulated call meter
adaptive clock method
association for computing machinery
antenna combiner/combining
advanced configuration and power interface
association control protocol machine
administrative domain name challenge panels
automatic carrier routing
apply charging report
adjacent carrier suppression
association control service element
air condition system fault
active state
advanced compatible television
antenna combining unit
automatic calling unit
accessory control unit
air condition unit
antenna diversity
adapter
TV-Asahi Data And Multimedia Service
association of data processing service organization
administration center
analog to digital conversion/converter
American Digital Cellular
advanced data communications control protocol
adaptive discrete cosine transform
automatic data handling
add drop multiplexer
application data manager
adaptive delta modulation
advanced multifunctional operator service system
abbreviated dialling number
adaptive differential pulse code modulation
active directory service interfaces
asymmetrical digital subscriber line [6 Mbps downlink, 640 kbps uplink]
advanced television
adaptive error control
acoustic echo control
aeronautical emergency communications system
advanced encryption standard
ATM end system address
audio frequency
ATM Forum
automatic frequency control
authority and format identifier
atomic force microscope
AppleTalk filing protocol (Apple)
Armed Forces Radio Service (USA)
Andrew File System
silver / Silber / lat. argentum / 47 protons
automatic gain control
access grant channel
accelerated graphics port
authentication header
artificial intelligence [system]
action indicator
Artificial Intelligence roBOt (jap. aibo=partner) [Sony]
advanced interactive content
application ID channel
address-indicating group
ATM inverse multiplexing
advanced intelligent network
ATM inter-network interface
alarm indication signal
alarm indication signal
advanced intelligent tape (Sony)
APPN Implementors Workshop
as known as / alias
Auskunftssystem Hardware
alarm
alignment
aluminum / Aluminium / lat. aluminium / 13 protons
adaptive linear coding
access link control application part
alarm collecting module
algorithmic language
alarm and interface module
alarm indication module for MPU version B and C
ATM layer processor element
ATM layer processing unit
arithmetic and logic unit
amplitude modulation
alarm management
americium / Americium / lat. americium / 95 protons
automatic message accounting
alarm and monitoring board
administrative management complex
Advanced Micro Devices
amplitude modulation equivalent
Asian Multimedia Forum
alternate mark inverse (line code for DS1)
advanced mobile phone system (American standard)
automatic message processing system
adaptive multi rate
audio-visual and multimedia services
advanced mobile traffic information and communication system
automated maritime telecommunications system (USA)
ATM multiplexer/demultiplexer
ATM multiplexer module A
ATM multiplexer type E
access node
access node address
answer message (B-ISUP)
AAL2 negotiation protocol
answer message
American National Standard (USA)
automatic answer network system for electronic request
American National Standards Institute (USA)
automotive network exchange
always on
always on / dynamic ISDN
advice of charge
automatic output control
advice of charge - charging level
advice of charge - information level
America OnLine (Internet Service Provider)
ATM OAM processor .element
application part
application process
audio processor
adaptive predictive coding
adaptive puls code modulation
avalanche photo diode
application protocol data unit
application program interface
advanced programmable interrupt controller
Asia-Pacific Mobile Telecommunications [Satellite]
Asia-Pacific Networking Group
Asia-Pacific network information center
advanced program to program communication
advanced peer to peer networking
automatic protection switching
application program system (Anlagen-Programm-System)
artificial reality
argon / Argon / lat. argon / 18 protons
absolute radio frequency channel number
Association of Radio Industries and Businesses
absolute radio frequency channel number
Association of Radio Industries and Businesses
American registry of internet numbers
address resolution protocol
advanced research projects agency [computer] network
automatic repeat request
access server
autonomous system
arsenicum / Arsen / lat. arsenicum / 33 protons
analog subscriber circuit
alarm signal cable
access service control element
American Standard Code for Information Interchange
application service element
advanced streaming format (Microsoft)
application specific integrated circuit
amplitude shift keying
ATM switching module
ATM swiching module for ASN-G
advanced storage magneto-optical [disc]
ATM switching network (ATM-Koppelfeld)
abstract syntax notation one
ATM switching network, type E (shelf)
alternative service provider
application service provider
alarm and status panel
active server pages
adjunct service point
ATM switching preprocessor element
answer seizure ratio
ATM switching unit
Abgas-Sonder-Untersuchung
activity test
astatine / Astat / lat. astatum / 85 protons
American Telephone & Telegraph Company
AT attachment (disk drive interface)
AT attachment packet interface
all trunks busy
analog trunk card
automatic test equipment
advanced traffic information services
asynchronous transfer mode
Adobe Type Manager (Adobe)
automatic teller machine (Geldautomat)
asynchronous transfer mode - protocol data unit
asynchronous transfer mode - service data unit
ATM interface ASIC on MP boards of EWSX, connects MP to AMX / ASN
asynchronous transfer mode / 25.6 Mbps
ascend tunnel management protocol
ATM rate adapter
automatic operator
Adenosintriphosphat
Advanced Telecommunications Research Institute
adaptive transform acoustic coding
Advanced Television Systems Committee (Amerikanisches HDTV)
analog trunk termination
advanced television
Advanced TeleVision Enhanced Forum
access unit (Anschlußeinheit)
answer unit
administrative unit
gold / Gold / lat. aurum / 79 protons
access unit broadband
access unit broadband type B
authentication center
access unit broadband
attachment unit interface
acceptable use policy
audio video interleaved (Microsoft)
audio/video/data
architecture for voice, video and integrated data
advanced wireless access
area-wide Centrex
additive white Gaussian noise
Aho, Weinberger, Kernighan [text file processing language]
boron / Bor / lat. borum / 5 protons
1972: 2nd public radio network in Germany [150 MHz, B1: different from A; B2: B1+A, 74 channels]
broadband code division multiple access
broadband inter-carrier interface
broadband ISDN
broadband inter-switching system interface
broadband ISUP
broadcasting multiplexed analog component
broadband ISDN network termination
broadband network termination type 1
broadband network termination type 2
business operation system function
boundary representation
broadband service node interface
broadband terminal adaptor
broadband terminal equipment type 1
broadband terminal equipment type 2
broadband user network interface
bipolar with 3 zero substitution (line code used for DS3)
bipolar with 8 zero sustitution
basic access (= BRI) [2xB64 + D16 + Overhead = 192 kbps]
bus arbitration
buffer allocation
British Air
barium / Barium / lat. barium / 56 protons
bandwidth allocation control protocol
bit alignment fault
barring [of] all incoming calls
barring [of] all outgoing calls
base processor
beginner's all-purpose symbolic instruction code
broadband (Breitband)
British Broadcasting Corporation
association of broadband network business chance & and culture creation
bulletin board system
bearer capability
base controller
Bellcore
block check character
BTS color code
broadcast call control
base core controller (controlling BTS+)
broadcast control channel
binary coded decimal
BSS central equipment
broadcast channel
Bose-Chaudhuri-Hocquenghem code
bearer capability information element
broadband connection-oriented bearer
broadband customer premises network
basic call state model
basic craft terminal
base station control unit
backup domain controller
best effort
beryllium / Beryllium / lat. beryllium / 4 protons
bit error (ratio)
backward explicit congestion notification
configuration management program (Betriebsmanagement)
bit error rate
bit error rate testing
bus extension unit
basic function charging
binary feedback
bad frame indication
begin acknowledge
begin [command]
border gateway protocol
Baugruppenrahmen
begin reject
bohrium / Bohrium / 107 protons
busy hour call attempts
busy hour half call attempts
broadcast HTML
bismuth / Bismut|Wismut / lat. bismutum / 83 protons
broadband IP access server
backward indicator bit
barring of all incoming calls when roaming outside home PLMN country
billing of generic internet service
Berkeley internet name domain
basic input output system
bit interleaved parity
built in self test
bit switch for optimized networks
binary digit
berkelium / Berkelium / lat. berkelium / 97 protons
broadband modem access protocol
business management layer
basic man-machine language
bridge number
früherer ÖN-Geschäftsbereich "Breitband-Netze"
Backus-Naur form
barring of all outgoing calls except those to home PLMN
Bell operating company
bandwidth on demand
barring of all outgoing international calls
barring of all outgoing international calls except to home PLMN country
beginning of message
Behörden und Organisationen mit Sicherheitsaufgaben
bridge protocol data unit
broadband passive optical network
business process reengineering
bit per second
binary phase shift keying
backward reporting
bromine / Brom / lat. bromum / 35 protons
basic rate access
broadband radio access network
Bundesrepublik Deutschland
bus ready enable
baud rate generator
basic rate interface (= BA)
bearer service
base station
broadcasting satellite
business software alliance
base station controller
binary synchronous communications
base station controller interface
Berkeley Software Distributions
base station interface
base transceiver station identity code
backup storage module
backward sequence number
base station system
base station subsystem
base station system application part
base station subsystem GPRS protocol
base station system management application part
base station system operation and maintenance application part
base station system test equipment
base station transceiver
base station system switch unit
bit time
board test
British Telecom
basic trading area
beginning tag
build to order
base transceiver station
base transceiver station equipment
base transceiver station management
broadcast unknown server
Bereitstellung zur Abnahme
carbon / Kohlenstoff / lat. carbo / 6 protons
1985: 3rd public radio network in Germany [450 MHz, 287 physical traffic channels]
carrier to interference ration
carrier to noise ratio
command / response
container for SDH signals - level 4
customer operation system function
C [programming language] + object orientation
conditional access
cordless access
certification/certificate authority
cell allocation
collision avoidance
California
calcium / Calcium|Kalzium / lat. calcium / 20 protons
call admission control
connection admission control
common access channel
computer aided design
common application environment
computer aided engineering
credit and finance information system
compound annual growth rate
charge advice information
common air interface
computer-aided information
California Broadband Users Group
call processing
continuous acquisition and life-cycle support
content addressable memory
computer aided manufacturing
Concentrator and Access Multiplexer
centralized automatic message account
content addressable memory element
customized application for mobile networks enhanced logic
CoAxiom management system
computer automated ordering
carrierless amplitude/phase [modulation]
central alarm port
cabling access panel
competitive access provider
call processor (EWSD)
CAMEL application part [protocol]
common application programming interface
character and pattern telephone access information network [system] (Japanese BTX)
committed access rate
channel associated signaling
common application service elements
computer aided software engineering
computer aided testing
credit authorization terminal
credit application terminal network
cable television (Kabelfernsehen)
community antenna television
call barring
cell broadcast
citizen band [27 MHz radio]
competitive benchmarking
cell broadcast center
cell broadcast channel
connectionless broadband data service
cell broadcast message identifier
consortium for business object promotion
constant bit rate
case based reasoning
cell broadcast relay service element
cell broadcast service
cell based traffic
computer based training
channel code
country code
call control
cross connect
continuity check|checking
contiguous concatenated
chip card
credit card
channel control block
call completion to busy subscriber
credit card calling
common channel controller
a type of coaxial cable
common control channel
charge coupled device
call control function
conditional call forwarding (supplementary service)
central clock generator
control channel
Cisco certified internetwork expert (Cisco)
Comité Consultatif International de Radio|Radiophonique
Comité Consultatif International Télégraphique et Téléphonique
Cisco certified network associate (Cisco)
current cell rate
common channel signaling
common channel signaling system no. 7
CCS7 evolution
coded composite transport channel
compact disc
cadmium / Cadmium / lat. cadmium / 48 protons
compact disc [interactive] - full motion video
compact disc - graphics
compact disc - interactive media
compact disc - recordable
compact disc - read only memory
compact disc - read only memory extended architecture
compact disc - rewritable
compact disc - video
circuit duplex asynchronous
The Communications Decency Act of 1996
common data base
a type of twisted pair cable
copper distributed data interface
common desktop environment
channel definition format
cutoff decrease factor
cellular data link control
code division multiple access
cellular digital packet data
call detail record
circuit duplex synchronous
consumer digital subscriber line
cell delay tolerance
cell delay variation
compact disk video
cell delay variation tolerance
connection element
circuit emulation
consumer electronics
Communauté Européenne (Europäische Union)
cerium / Cer / lat. cerium / 58 protons
conditional expression algorithm table
consumer electronics bus
Commission of the European Communities
center for educational computing
chip electronic commerce standard
connection endpoint identifier
central EIR
code excited linear prediction
Comité Européen de Normalisation
Comité Européen de Normalisation Electrotechnique
chief executive officer
connection end point
color electronics prepress system
European conference of postal and telecommunications administrations
customer equipment
cell error rate
conseil européen pour la recherche nucléaire
computer emergency response team
circuit emulation service
computer entertainment software association
call forwarding
compact flash RAM (flash RAM module standard)
californium / Californium / lat. californium / 98 protons
call forwarding on [mobile subscriber] busy
call forwarding on [mobile subscriber] not reachable
call forwarding on [mobile subscriber] no reply
call forwarding unconditional
clock generator
computer graphics
common gateway interface
cell global identity
computer graphic interface
computer graphics metafile
clock generator and signal multiplexer
clock generator unit
challenge-handshake authentication protocol
CCITT high level [programming] language
common hardware reference platform
call holding time
card holder verification information
cell identity
continuation indicator
congestion indication
common interface
closed user group index
controlled introduction [NewBridge]
competitive intelligence
computer incident advisory capability
circuit identification code
channel identifier
connection identification
call instance data
classless inter-domain routing
common intermediate format
camera image file format
common information model
call information manager
computer integrated manufacturing
chief information officer
Carriage Insurance Port
committed information rate
channel interference ratio
certified information systems auditor
complex instruction set computer
Comité International Spécial des Perturbations Radioélectrique
customer interface unit
Commercial Internet Exchange [Association]
cell loss
chlorine / Chlor / lat. chlorum / 17 protons
cell assembly / disassembly
synchronized, connection oriented, constant bitrate connection
synchronized, connection oriented, variable bitrate connection
not synchronized, connection oriented, variable bitrate connection
not synchronized, connectionless, variable bitrate connection
competitive local exchange carrier
command line interface
calling line identity
calling line identification presentation
connectionless Internet protocol
calling line identification restriction
clock
clock element version 1B
consolidated link layer management
connectionless network protocol
connectionless network service
cell loss priority
cell loss ratio/rate
connectionless service/server
connection management
configuration management
curium / Curium / lat. curium / 96 protons
connection management architecture
clock module board
Centralized Monitoring Equipment
coded mark inversion
computer managed instruction
common management information protocol
common management information service
common management information service element [protocol]
current mode logic
channel mode modify
common memory module
complementary metal oxide semiconductor
common management information protocol over TCP/IP
cellular manual revision
cell misinsertion rate
cash management service
conversational monitor system (IBM)
cross multiplexer
core network
connection number
computerized numerical control
circuit node equipment
certified NetWare engineer (Novell)
Chinese Network Europe (Sat-TV)
comfort noise generator
comfort noise insertion
calling number identification presentation
calling number identification restriction
customer network management
Cable News Network
connection oriented
cobalt / Cobalt / lat. cobaltum / 27 protons
common business oriented language
cross office check
coordinating committee for export control
coder/decoder
command file processor
connection line identity
connection line identification presentation
connection line identification restriction
component object model
continuation of message
connection oriented network service
Child Online Protection Act
common open policy service
common object request broker architecture
council of registrars
CorNet based on QSIG
class of service
connection orientied service
cosine (Kosinus)
common open software environment
customer operation system function
common object service specification
central office terminal/termination
connection oriented telephone service
control of use
conference unit
call processing
common part
central processor
coordination processor 113 (EWSD)
common packet channel
common part convergence sublayer
common part convergence sublayer - header
common part convergence sublayer - protocol data unit
common part convergence sublayer - service data unit
common part convergence sublayer - trailer
common part convergence sublayer - user-to-user indication
customer premises equipment
computer performance evalutation
call progress message (B-ISUP)
coordination processor interface
common part indicator
common part sublayer
consumer products safety commission
central processor subsystem
copyright protection technical working group
central processing unit
customer premises network
code receiver
change request
chromium / Chrom / lat. chromium / 24 protons
cyclic redundancy check
cyclic redundancy code
Code Receiver / Echo Suppression
[local] connection related function
code receiver for pushbutton dialing, 8 receiver modules
cell resource manager
customer relationship management
convenience radio phone
continuous replenishment program (->ECR)
computerized reservation system
cathod ray tube
copyright royalty tribunal
convergence sublayer
carrier switch
customer service
communication satellite
connection specific
caesium / Cäsium / lat. caesium / 55 protons
capability set 1 [ITU-T]
common system bus
combined switching center
computer supported cooperative work
circuit switched data network
CAMEL service environment
Centro Studi e Laboratori Telecommunicazioni s.p.A
constructive solid geometry (groupware)
color super-homeotropic mode [liquid crystal]
carrier scale internetworking
convergence sublayer indication
continuous state leaky bucket
customer service management
carrier sense multiple access with collision avoidance
carrier sense multiple access with collision detection
circuit switching network
corporate strategic officer
certified service provider
circuit switched public data network
customer service representative
cell switch router
cascading style sheet
content scrambling system
computer supported telephony application
chip select unit
Christlich-Soziale Union
comma separated value
central system panel
call transfer
controlled transfer
craft terminal
cordless telephony
channel tester
computer tomography (Computertomographie)
[Standard for] cordless telephone
commercial type 1
cell transfer/transmission delay
cartridge tape drive
computer telephony integration
cellular telecommunications industry association
cordless services first step
configure to order
connection terminating point
directional radio system from Milano
centrex
clock unit
control unit
copper / Kupfer / lat. cuprum / 29 protons
closed user group
control unit mobile
closed user network
code violation
constant voltage constant frequency
content vectoring protocol
constrained video parameter
continuously variable slope delta modulation
call waiting
continuous wave
coexistence specification
signaling channel in narrowband ISDN
1991: 4th public radio network in Germany [900 MHz, 992 channels, half for D1 und D2, GSM]
digital to analog conversion/converter
digital advanced mobile phone system (American standard)
digital video home system (digital video tape format, up to 500 lines horizontal resolution)
D2 multiple analog component (European TV standard)
PCM interface card (2 Mbit/s)
digital line interface for GSM (2 Mbit/s)
digital video on 8mm tape, aka Digital8 (digital video tape format, 500 lines of horizontal resolution)
digital mobile radio communication network, GSM standard, 900/1800 MHz Band
digital access [NTT]
digital audio broadcasting
digital to analog converter
digital access and cross-connect system
destination address field
digital audio interface
drahtlose Anschlußleitung
DECT authentication module
demand assignment multiple access
data access point
data radio channel
Defense Advanced Research Projects Agency [USA]
digital announcement system
supervisory system used for CTR
data acquisition system
direct access storage device
digital television application software environment
digital audio tape
digital audio transmission
Digital Audio Visual Interactive Counsil
deziBel
data base
dummy burst
dubnium / Dubnium / 105 protons
data base/data communication
Database 2 (IBM)
dynamic bandwidth allocation
data base administration
dual bitmap
data base management system
deterministic bit rate
direct broadcasting satellite
direct current (Gleichstrom)
dedicated control [service access point]
dynamic channel allocation|assignment
data communication channel
data country code
direct current converter
digital compact cassette
dedicated control channel
data communication equipment
data communication equipment
data circuit [terminating] equipment
distributed computing environment
data communication function
direct connect fabric
Design rule for Camera File system (JEIDA)
Deutsches Cäsium Frequenznormal 77,5 kHz
dedicated channel
display control interface
dedicated channel interface module
data|digital communication network
digital central office
distributed component object model
data communication processor
digital cellular radio conference
dynamic channel selection
data communication system
Digital Communication System [1710-1785 MHz uplink, 1805-1880 MHz downlink]
Defense Communications System (USA)
discrete cosine transform
Digital Cordless Telecommunications at 1900 MHz (USA)
Digital Cordless Telephony at 900 MHz (Sweden)
digital cordless telecommunications wireless user premises equipment
data dictionary
display data channel
digital distributor frame
direct dial in
device development kit
Defense Data Netowrk (USA)
double data rate [mode]
Deutsche Demokratische Republik
direct digital synthesis
digital data storage
digital echo compensator
Digital Equipment Corporation
digital enhanced cordless telecommunications
digital European cordless telephone
Datenendeinrichtung
directory enabled network
data encryption standard
distributed feed-back [laser diode]
Deutscher Fussball-Bund (German soccer association)
default forwarder function group
digital flat panel port
double frequency shift keying
differential global positioning system
dynamic host configuration protocol
diversity handover
dual independant bus
direct inward dialing
digital video on 8mm tape, aka D8 (digital video tape format, 500 lines of horizontal resolution)
dual in-line memory module
Deutsche Industrie-Norm
NEC network architecture [NEC]
draft international standard
digital interface standard for monitors
digital interface unit (EWSD)
DECT interface unit (CoAxiom)
digital Internet exchange
data link
downlink
data link control
data link connection
data link connection identifier
data link discriminator
design level description
data link escape character
dynamic link library
data link switching
digital line unit
digital line unit B
delta modulation
Deutsche Mark
direct memory access
design & modeling application council
digital multi channel
Digital Mobile Communication System
differential mode delay
distributed management environment
desktop management interface
delivery multimedia interface
digital mobile radio system
discrete multi-tone [modulation]
Desktop Management Task Force
demilitarized zone (e.g. Internet server inside a firewall)
dialing number
directory number
digital network architecture
deoxyribonucleic acid (DNS)
direct numerical control
data network identification code
data numbering plan area
domain name service
domain name system
Desoxyribonukleinsäure
data network unit
data oriented approach
NTT Mobile Communication Network, Inc. (jap. dokomo = everywhere)
data over cable service interface specification
[U.S.] Department of Defense
document object model
denial of service
disk operating system
[Japanese] disk operating system based on VGA cards
dial pulse
detection point (BCSM)
draft proposal
data package
Deutsche Presseagentur
destination point code
differential pulse code modulation
distributed processing environment
destination process identification
dots per inch
digital phased locked loop
display power management system
digital private network signaling system
direct printing protocol (1394)
data post processing system
dual-port RAM
dynamic packet transport
distributed queue dual bus
differential quadrature phase shift keying
dynamic random access memory
digital radio controller
diversity radio channel unit
D-channel relay function
digital radio interface
drift radio network controller
drift radio network subsystem
distribution and replication protocol
digital radio system
discontinuous reception
direct sequence
digital section (F2)
direct sequence spread - spectrum
digital signal level 0 (64 Kbps)
digital signal level 1 (see T1, 1.544 Mbps, 24x DS0)
digital signal level 1C (3.152 Mbps, 48x DS0)
digital signal level 2 (see T2, 6.312 Mbps, 4x DS1 resp. 96x DS0)
digital signal level 3 (see T3, 44.736 Mbps, 28x DS1 resp. 672x DS0)
digital signal level 4 (see T4, 274.176 Mbps, 4032x DS0)
direct sequence - code division multiple access
direct sequence - spread spectrum
digital signal level 0 (64 Kbps)
digital signal level 1 (see T1, 1.544 Mbps, 24xDS0)
digital signal level 1C (3.152 Mbps, 48xDS0)
digital signal level 2 (see T2, 6.312 Mbps, 4x DS1 resp. 96xDS0)
digital signal level 3 (see T3, 44.736 Mbps, 28x DS1 resp. 672x DS0)
digital signal level 4 (see T4, 274.176 Mbps, 4032x DS0)
data service adapter
digital switch board
double sideband [modulation]
digital subscriber card
downlink shared channel
direct stream digital
data switching exchange
digital subscriber group
digital speech interpolation
digital subscriber line
digital subscriber line access multiplexer
digital sense multiple access
digital storage media command and control
data signal multiplexer
Defense Switching Network (USA)
domain specific part
digital signal processor
data signaling rate
digital short range radio
digital signature standard
data display unit (Datensichtstation)
decision support system
digital satellite service - personal computer
digital subscriber signaling [system] [no.] 1
digital subscriber signaling [system] [no.] 2
direct stream transfer
Dienststelle
dualscan supertwisted nematic [liquid crystal display]
digital signal unit
data service unit
digital service unit
digital simultaneous voice and data
digital signal level x (e.g. DS1)
Deutsche Telekom AG
direct transfer application part
dedicated traffic channel
dynamic tunnel configuration protocol
digital transmission content protection
document type definition
data terminal equipment
digital trunk group
date-time group
digital trunk group with sub-multiplexing
dual trunk link peripheral card
Deutsche Tele Mobil GmbH
dial tone multi-frequency [signaling]
desktop publishing
desktop presentation
digital trunk termination
desktop video
discontinuous transmission
Datenübertragungseinrichtung
data user part
digital video
digital video tape (digital video tape format, 500 lines of horizontal resolution)
digital video [cassette format]
digital video broadcast
digital video broadcast - terrestrial
digital versatile disc (new name, digital video disk format, up to 500 lines horizontal resolution)
digital video disc (old name)
digital versatile disc - audio
digital versatile disc - recordable
digital versatile disc - read/write (max. 1000x)
digital versatile disc - random access memory (max. 100000x)
digital versatile disc - read only memory
digital versatile disc + rewritable
digital video home system (digital video tape format, up to 500 lines horizontal resolution)
digital video interactive
distance vector multicast routing protocol
dense wavelength division multiplexing
drawing web format
drawing (CAD file format)
drawing interchange format
data exchange interface
dysprosium / Dysprosium / lat. dysprosium / 66 protons
Erlang
Ethernet
1994: 5th public radio network in Germany [1800 MHz, 2992 channels, TDMA/FDMA]
extended GSM
element operation system function
Extended Total Access Communication System
European PDH transmission signal level 1 [ 2.048 Mbps]
European PDH transmission signal level 2 [ 8.448 Mbps]
European PDH transmission signal level 3 [ 34.368 Mbps]
European PDH transmission signal level 4 [139.264 Mbps]
European PDH transmission signal level 5 [564.992 Mbps]
equal access
external alarm
emergency action interface
PPP extensible authentication protocol
electrically alterable read only memory
electronic bill presentment & payment
elementary basic service group
European Broadcasting Union
electronic book extended architecture
electronic commerce
echo compensator/canceller
Eurocard/Eurocheque card
embedded control channel
error correcting code
error checking and correcting
echo cancellation circuit
European Conference on Carrier Supply
egress connection identifier
emitter coupled logic
error correction mode (fax)
European Communications Manufacturers Association
extended capabilities port
efficient consumer response
explicit cell rate
explicit call transfer
Enterprise Computer Telephony Forum
electronic design automation
Effective Date of Contract
error detection and correction
error detection code
earliest deadline first
erbium doted fiber amplifier
enhanced data GSM environment [enhanced GSM with up to 384 kbps]
electronic data interchange
electronic data interchange for administration, commerce and transport
extended data out - dynamic random access memory
event detection point
electronic data processing
enhanced digital subscriber line
European Digital Subscriber Signaling System No. 1
extended definition television
electric echo control
electrically erasable and programmable read only memory
explicite forward congestion indication
Electronic Frontier Foundation
enhanced full rate (speech transcoding)
error free seconds
electronic funds transfer
electronic funds transfer from the point of sale
extremely high frequency (30 GHz - 300 GHz)
European home system
European Home System Association
enterprise integration
electrical engineers association
Electronic Industry Association of Japan
enhanced integrated drive electronics
excess information rate
equipment identity/identification register
equipment identification register procedure
extended industry standard architecture
equipment identity register
effective isotropically radiated power
electronic key telephone system
echo loss
element layer
emulated LAN
equal-level far-end cross talk
element layer interface
error monitoring
electro-magnetic compatibility
equipment management function
electromagnetic interference
element management layer
extended MML
expanded memory specification
emergency service equipment for pushbutton subscriber
elektromagnetische Verträglichkeit
Electronic Mobile Exchange
end acknowledge
embedded operation channel
end of file
end of message
electronic ordering system
end of tape
electronic publishing
early packet discard
explicitly parallel instruction computing
electrically programmable logical device
erasable and programmable read only memory
electric pipe space
encapsulated PostScript file
explicit rate
erbium / Erbium / lat. erbium / 68 protons
EDGE radio access network
explicit rate indication and congestion avoidance
Erlang
enterprise relationship management
European Radio Message System
effective radiated power
enterprise resource planning
errored second
einsteinium / Einsteinium / lat. einsteinium / 99 protons
end system to intermediate system
enterprise systems architecture
European Space Agency
electro-static discharge
extended superframe
electronic serial number
enhanced services platform
encapsulating security payload
European Strategic Program for Research and development in Information Technology
exchange termination (Vermittlungsabschluß)
Extended Total Access Communication System
end tag
extended tail bit
electronic toll collection
end to end answer equipment
ETSI technical report
European telecommunication standard
European Telecommunications Standards Institute
end of transmission
European Union / Europäische Union
europium / Europium / lat. europium / 63 protons
end user computing
extended UNIX code
enhanced variable rate codec
Elektronisches Wählsystem Digital (Digital Electronic Switching System)
Elektronisches Wählsystem Paketvermittlung
EWSD Express V1 (ATM crossconnect by ICN M)
EWSD Express V2 (ATM switch by ICN M)
EWSD Express V3 (ATM switch by ICN WN, currently under development)
EWSD Express (full marketing name of EWSX)
excessive bit error rate
exchangeable image file format
fluorine / Fluor / lat. fluorum / 9 protons
internal FIFO bus of PCI
F1 operation and maintenance (regenerator section level)
F2 operation and maintenance (digital section level)
F3 operation and maintenance (transmission path level)
F4 operation and maintenance (virtual path level)
F5 operation and maintenance (virtual channel level)
foreign agent
factory automation
final assembly code
fast associated control channel
forward link access channel
frame aligner and clock regenerator (for PCM)
framing and line interface component (PCM)
frame alignment pattern
frequently asked questions
frame alignment signal
framed ATM over SONET/SDH transport
file allocation table
frame alignment unit
fast uplink signaling channel
frame alignment word
frequency [correction] burst
fibre channel - arbitrated loop
fault, coonfiguration, accounting, performance, security
[U.S.] Federal Communications Commission
frequency correction channel
fast cycle random access memory
frame check sequence
function description block
frequency division duplex
floppy disc drive
frequency division duplex - direct sequence
frequency division duplex - multicarrier
fiber distributed data/digital interface
Fernmelde-Dienstgebäude
final draft international standard
facility data link
frequency division multiplex
frequency division multiple access
floppy disc unit
Fast Ethernet
iron / Eisen / lat. ferrum / 26 protons
fast data enciphering algorithm [NTT]
far end block error
forward error correction
forward explicit congestion notification
field emission display
frame erasure indication
fault report catalogue (Fehlermeldungskatalog)
front-end processor
flash erasable and programmable read only memory
frame erasure ratio
far end received failure (now: RDI)
field effect transistor
far end cross talk
fast frequency hopping
Fast Feature Platform
for further study
fast Fourier transformation
fiber hub
frequency hopping
college (Fachhochschule)
frequency hopping / spread spectrum
frequency hopping code division multiple access
frequency hopping [and clock distribution] equipment
file handling system
forward indicator bit
filter combiner
Future ISDN Forum Japan
first in - first out
frame information signal
financial information system center
fill in signal unit
failure in time
fiber in the loop
Frankenstein Lidzba Access Method
ferroelectric liquid crystal
FLEX - time diversity (NTT)
feeder line interface
floating-point operations per second
frühester Liefertermin
frequency modulation
forward monitoring
fault management
fermium / Fermium / lat. fermium / 100 protons
frame mark bit
frame mode bearer service
fixed/mobile convergence
fixed mobile integration
flexible manufacturing system
feature management tool
full motion video
flexible multiplexer
frame number
Fujitsu network architecture [Fujitsu]
functional object
first office application
fax over IP
formula translator (programming language)
fuse panel
field programmable gate array
freephone service
Firmen-Projektleitung
future public land mobile telecommunication system
frames per second
floating point unit
fully qualified domain name
frame relay
full rate
feature request
fault report (in FEKAT)
francium / Francium / lat. francium / 87 protons
frame relay access device
frame assembly / disassembly
ferroelectric random access memory
FPT recommendation of API
frame clock
frame relay engine
feature request sheet
fixed station
firewall service agent
full service access networks
Free Software Foundation
frequency shift keying
flexible service logic
finite state machine
forward sequence number
foreign terminal access
final type approval
file transfer and access method
file transfer, access and management (ISO)
fiber termination module
file transfer protocol
file transfer program
fiber to the building
fiber to the curb
fiber to the home
fiber to the terminal
functional unit
frame [relay] user network interface
Funk-Konzentrator
Funkvermittlungsstelle
exchange for long distance dialing (Fernvermittlungsstelle)
firmware
firewall
fixed wireless access
Fernwirkverteiler
FICOM expansion module for 1 carrier
genetic algorithms
gallium / Gallium / lat. gallium / 31 protons
gallium-arsenide integrated circuit
geographical area description
gateway attribute distribution protocol
Global Advanced Intelligent Network [Siemens]
general access protocol
generic access profile
generic attribute registration protocol
Gigabit Ethernet
Gigabit per second
Gigabit per second
Gigabit per second
general control [service access point]
gain coupled distributed feed-back [laser diode]
group call control
generic cell rate algorithm
GPRS coprocessing unit
gadolinium / Gadolinium / lat. gadolinium / 64 protons
graphics device interface
guidelines for the definition of managed objects
global descriptor table
group encoding
germanium / Germanium / lat. germanium / 32 protons
Gigabit Ethernet Alliance
generic flow control
general frequency detector
guaranteed frame rate
Gaussian frequency shift keying
gateway GPRS support node
gigahertz (1E9/s)
group identifier
general information block
graphics interchange format
global information infrastructure
geographical information system
gate keeper
graphical kernel system
glue logic block
global megamedia network (NTT)
giant magneto-resistive head
gateway MSC
Gaussian minimum shift keying
Greenwich Mean Time
gigabit multiplexer
gigabit multiplexer with electrical lines
gigabit multiplexer with optical fibre lines
ground
global network provider
gross national product
global navigation satellite system
GNU is not UNIX (FSF)
government OSI profile
group processor
GSM PLMN area
group processor (Gruppenprozessoreinheit)
general purpose interface bus
GNU public license
general packet radio service (GSM enhancement)
generalized processor sharing
Global Positioning System (USA)
general purpose serial interface
generic power supply unit
group processor Vision O.N.E.
rack (Gestellrahmen)
GPRS register
group switch
GSM service area
gateway MSC (in satellite networks)
Global System for Mobile Communication [890-915 MHz uplink, 935-960 MHz downlink]
great software monster
GSM extension band G1 [880-890 MHz uplink, 825-960 MHz downlink]
GSM Railway
GPRS support node
global title
Gran Turismo
generic top level domain
GPRS tunneling protocol
global title translation
graphical user interface
global voice infrastructure [IBM]
global virtual network service
global virtual private network
GARP VLAN registration protocol
gateway
groupware
graphical workstation
hydrogen / Wasserstoff / lat. hydrogenium / 1 proton
hardware standard (ECTF)
multimedia standard (ITU)
handheld personal computer resp. handheld/PC
hardware
high-speed ISDN channel [ 384 kbps]
high-speed ISDN channel [1.5 - 2 Mbps]
high-speed ISDN channel [1472 kbps]
high-speed ISDN channel [1563 kbps]
high-speed ISDN channel [1920 kbps]
high-speed ISDN channel [ 70 Mbps]
high-speed ISDN channel [135-139 Mbps]
home agent
HLR authentication distributor
Promotion Committee of the Harmonization of Advanced Telecommunications Systems
home audio/video interoperability
Handbedienteil
hard copy printer
hierarchical and compact description chart
hierarchical cell structure
high definition multiplexed analogue components
high density bipolar of order 3 (line code for E3)
high level data link control
hardware device module
handheld device markup language (HTML for PDAs)
high bitrate digital subscriber line
handheld device transport protocol
high definition television
highway demultiplexer
helium / Helium / lat. helium / 2 protons
header error control
high electron mobility transistor
highly elliptical orbit
Hochfrequenz (radio frequency)
high frequency (3 MHz - 30 MHz)
hafnium / Hafnium / lat. hafnium / 72 protons
hybrid fiber coax
mercury / Quecksilber / lat. hydrargyrum / 80 protons
Hongkong
hard handover
high definition video on 8mm tape (analog video tape format, 400 lines of horizontal resolution)
high capacity floppy disk (Sony) [200 MB]
high performance radio LAN
high performance parallel interface [1.6 Gbps]
headend interface unit
housekeeping
high layer compatibility
home location register
home location register identity
highway multiplexer
Hitachi network architecture [Hitachi]
high performance network node [Siemens]
handover
holmium / Holmium / lat. holmium / 67 protons
handover control
head of line blocking
home phoneline networking alliance
home radio frequency [2.4 GHz]
handover number
higher order path adaptation
handheld personal computer resp. handheld/PC
high performance computing act
high performance computing and communications
hard polymer clad fiber
home PLMN
higher order path termination
half rate
Home Radio Frequency Working Group
hardware reference platform
hassium / Hassium / 108 protons
high speed ATM
high-speed circuit switched data
HLR subscriber management
handover sequence number
high speed serial interface
high-speed token ring
hypertext markup language
hypertext transfer protocol
header translation unit
home unit
hardware
hardware tracer
iodine / Jod / lat. jodum / 53 protons
interim European telecommunications standard
interception network management center
input/output
incoming access
intelligent agent
Intel architecture 64 (Intel)
initial address acknowledgement (B-ISUP)
Internet Architecture Board
Internet Advertising Bureau
inter application communication
international automatic call back
International Ad Hoc Committee
Industry Alliance for Interoperability
initial address message (B-ISUP)
Internet Assigned Numbers Authority
inter administration revenue accounting
inter administration accounting with AMA/MCR
inter administration accounting with statistics
International Business Machines Corp.
intelligent base station
intrinsic burst tolerance
identification card
integrated circuit
independent computing architecture
Internet Corporation for Assigned Names and Numbers
incoming calls barred within the CUG
internal continuity check
ISDN communication controller
intelligent chip card reader
integrated communications cabling system
international code designator
in-circuit emulator
Intercity Express [DB]
information conversion function
internal communication highway
inter carrier interface
ingress connection identifier
IN call modification
Internet control message protocol
information & communication networks [Siemens]
Intercity Night [DB]
intermediate circular orbit
Intel computing performance index [Intel]
Institute for New Generation Computer Technology
inter cache protocol
initial cell rate
INternet Computer Security Association
identification [number]/ identifier
integrated database application program interface
integrated drive electronics
intelligent drive electronics
international data encryption algorithm
ICAM definition language
intermediate distribution frame (Zwischenverteiler)
inventory data file
initial domain identifier
integrated digital loop carrier
integrated digital network [integration of transmission and switching]
abbreviation of "Nihon Idou Tsuushin" (= Japan Mobile Communication)
interactive debugging system
ISDN-like digital subscriber line
interrupt descriptor table
inventory data table
indoor microwave unit
information element
information element algorithm table
International Electrotechnical Commission
Institute of Electrical and Electronic Engineering
(Firewire, 100/200/400 ... Mbps)
information element identifier
Internet Engineering Task Force
Internet Engineering Steering Group
intermediate frequency
interrupt flag
industry foundation classes
International Federation for Information Processing
International Frequency Registration Board
initial graphics exchange specification
internet group management protocol
interior gateway routing protocol
internet GPRS support node
Internet Initiative Japan
Internet inter-ORB protocol
interactive information response
interim inter-switch signaling protocol
internet key exchange
Impulskennzeichen Plan 50 der DTAG
Industrial Light & Magic
interim/integrated local management interface
Integrated Line Test Functionality
inverse multiplexing for ATM
internet message access protocol
internet message access protocol version 4
improved multi band excitation
input method editor
international mobile equipment identity
in my humble opinion
intelligent manufacturing system
international mobile subscriber identity
international mobile telecommunications
international mobile telecommunication 2000
international mobile telecommunication 2000 (former: FPLMTS)
International Multimedia Teleconferencing Consortium
Improved Mobile Telephone Service (USA)
intelligent multiplexer
intelligent network
indium / Indium / lat. indium / 49 protons
intelligent network application part
intelligent network application protocol
individual digital announcement system [Siemens]
inter network interface
International Maritime Satellite Organization
intelligent network service
information network system [net]
information network system - packet switching service
Interoperability Technology Association for Information Processing [Japan]
International Telecommunications Satellite [Organization]
input / output control
independent operating companies
input / output processor for call processor periphery
IP over glass
intra office interface
I/O module
I/O module type A
input/output processor
IOP for authentication
IOP for V.24 interface
IOP for X.21 interface
intelligent peripheral
Internet protocol
intermodulation products [Motorola]
Information Technology Promotion Agency [Japan]
ISDN primary access transceiver
IP based private branch exchange
intelligent peripheral controller
inter-process communication
IP payload compression protocol
internet protocol control protocol
integrated planning group
integrated packet handler
initial program loader
IP multi-cast [service]
internet protocol next generation
integrated product planning
intellectual property rights
inter processor signaling
Internet protocol security architecture
internal packing system unit
Internet protocol version 4
Internet protocol version 6
inter-network packet exchange
inter-network packet exchange / sequenced packet exchange
infrared (infrarot)
iridium / Iridium / lat. iridium / 77 protons
internet relay chat
Infrared Data Association
mobile telephone system based on (planned) 77 satellites, went backrupt in 2000 when 66 satellites were operational
in real life
interrupt request register
Internet Research Task Force
infrared transfer protocol
[EIA network protocol standard]
industry standard architecture
internet security association & key management protocol
index-sequential access method
Internet server application programming interface
international subscriber code
international switching center
Internet Software Consortium
internet subscriber controlled input
integrated services digital broadcasting
integrated services digital network
ISDN user part
integrated service logic
Internet subscriber module
industrial scientific and medical band
International Standards Organization
Internet Society
Internet service provider
interrupt service routine
internet supplementary services
inter switching system interface
integrated signaling and traffic simulator
integrated services television
ISDN user part
information technology
interim type approval
information technology association of America
information transfer capability
internal transport protocol
intelligent transport system
ISDN traffic simulator
information technology security evaluation criteria
International Telecommunications Union
International Telecommunications Union, Telecommunication Standardization Sector
International Telecommunications Union, Telecommunication Standardization Sector
(interconnection point between RNC and core network node)
(interconnection point between RNC and Node B)
(interconnection point between two RNC)
inspected, updated, and stored
internal variable
internal variable algorithm table
interactive voice response
interworking MSC
interworking equipment
(ASIC for conversion of 8 PCM to ATM, both way)
interworking function
interworking function connection element
interworking unit
internet exchange point
inter exchange carrier
Japanese digital signal level 1 [ 1.544 Mbps]
Japanese digital signal level 2 [ 6.312 Mbps]
Japanese digital signal level 3 [32.064 Mbps]
Japanese digital signal level 4 [97.728 Mbps]
Japanese digital signal level 5 [397.200 Mbps]
[name of a programming language, slang word for coffee]
Java telephony
,jammed bit zero [code] substitution
Japan chainstore association
job control language
Japanese Digital Cellular (now: PDC)
Java development kit
Japan data storage forum
Japan Information Highway
JAVA intelligent network infrastructure
Japanese automotive network exchange
Joint Photographic/Picture Experts Group
Japan Internet Exchange
Japan shared mobile radio
,joint test action group
job transfer and manipulation
potassium / Kalium / lat. kalium / 19 protons
kilobit (1000 bit)
kilobyte (1000 byte)
kilobyte (1024 byte)
kilobit per second
kilobit per second
kilobit per second
key distribution center
kilohertz (1000/s)
Koppelnetz (switching network)
krypton / Krypton / lat. krypton / 36 protons
kilo-symbols per second
KDD terabit highway 21 [KDD/Japan]
kernel transport network
Knotenvermittlungsstelle (node exchange)
Kabelverzweiger [Siemens]
kilowatt (1000 watts)
line alarm indication signal
line far end block error
line far end receive failure
layer 1, physical layer
layer 2, data link layer
layer 2 forwarding
layer 2 management
layer 2 relay function
L2R bit oriented protocol
L2R character oriented protocol
layer 2 tunneling protocol
layer 3, network layer
layer 3 controller
lanthanum / Lanthan / lat. lanthanium / 57 protons
link access control
location area code
L2TP access concentrator
location area code
location area identity
local automatic message accounting
local area network
LAN emulation
link access protocol on B channel (X.25 protocol)
link access protocol on D channel
link access point discriminator
LAPD mobile (for the radio link of GSM)
link access protocol version 5
OSI layer 1 (physical layer)
OSI layer 2 (data link layer)
OSI layer 3 (network layer)
OSI layer 4 (transport layer)
OSI layer 5 (session layer)
OSI layer 6 (presentation layer)
OSI layer 7 (application layer)
leaky bucket
line build out
line control
liquid crystal display
loss of cell delineation (ATM)
local communication network
link control processor
least cost routing
local craft terminal
last compliance time
least configurable unit
line code violation
lowspeed data
laser disk [video disk with typically 30cm diameter]
low delay code excited linear prediction
lightweight directory access protocol
local data communication processor
local exchange
LAN emulation address resolution protocol
[U.S.] Law Enforcement Agency
large effective area fiber
LAN emulation address resolution protocol
LAN emulation client
local exchange carrier
LAN emulation client identifier
LAN emulation configuration server
light emitting diode
Lean Engineering Offering
low earth orbit|orbiter
LAN emulation server
LAN emulation user
local exchange
loop filter
line feed (Zeilenvorschub)
low frequency (30 kHz - 300 kHz)
line interface
line identity
length indicator
lawful interception
lithium / Lithium / lat. lithium / 3 protons
line interface for basic access
line interface circuit|card
link interface concentrator
line interface card for Mobile
last in first out
local interface gateway
leaf initiated join
line interface unit
leased line
Autokennzeichen Landsberg am Lech
logical layered architecture
logical link control
low layer compatibility
logical link control / subnetwork attachment point
logical link identifier
layer management
feature (Leistungsmerkmal)
local multipoint communication system
local multipoint distribution service
local management interface
Leistungsmerkmalkatalog
location mark number
local mobile subscriber/station identity
local maintenance terminal
local monitoring unit
low noise amplifier
last number dialed
local number portability
L2TP network server
loss of continuity
loss of frame (SDH/Sonet)
loss of output signal
loss of pointer (SDH/Sonet)
loss of signal
linear predictive coding
link protocol discriminator
local PLMN
LIC protection switch
location register
lawrencium / Lawrencium / lat. lawrencium / 103 protons
longitudinal redundancy check
least replacable unit
line subscriber station
least significant bit
loop signaling card
local switching system general requirements
link status signal unit
line status table
listener side-tone rating
local area network service unit
line termination
line/trunk controller
line transmission element
line/trunk group
line/trunk group B
line/trunk group M [Siemens]
line transmission module
long term prediction
line termination part
line/trunk unit
line unit
local unit
location update
lutetium / Lutetium / lat. lutetium / 71 protons
logical user port
low voltage differential signaling
low voltage technology
Lichtwellenleiter (optical fiber)
line workstation [Siemens]
local exchange
line X-connect module
Autokennzeichen von München
mobile service switching point
maintenance and trouble shooting
management of ATM end devices
management of private ATM networks or switches
management links between public and private networks
management of public ATM networks
management links between two public networks
mobile allocation
medium adaptor
medium access control
message authentication code
multiple association control function
mobile allocation channel number
metropolitan area exchange
mobile additional function
management application function
mobile access hunting (service)
mobile allocation index
metropolitan area network
mobile application part
management application protocol data unit
multiple access protocol over SONET/SDH [NTT]
mobile application register
minimum assured rate
medium attachment unit
megabit (1E6 bit)
message buffer
megabyte (1024 kilobyte)
megabit per second
message buffer B [Siemens]
megabit per second
m-ary bi-orthogonal keying
megabit per second
message buffer control
maximum burst size
message buffer unit
music cassette
multi channel access
master control block
mobile country code
message coder / decoder
memory capacity exceeded flag
message communication function
message channel
München
malicious call identification
multicast connection identifier
maintenance craft interface
management communication network
multimedia cable network system
Mega-chips per second
minimum cell rate
mobile call record
mass calling service
monitoring cell sequence number
mobile control unit
main control unit
mediation device
mini-disc (digital audio MO disk)
mendelivium / Mendelivium / lat. mendelivium / 101 protons
macro diversity combining
magnetic disc drive|device
main distribution frame (Hauptverteiler)
mobile data initiative
mobile data service
mean down time
message description table
multiple dwelling unit
mobile equipment
maintenance entity
multi-exit discriminator
memory
medium earth orbit
mobile application execution environment
mediation function
multi-frequency
medium frequency (300 kHz - 3 MHz)
multi-frame alignment
multi-frequency code
multi-frequency code signaling (R2)
maximum frame length
metropolitan fiber system
multipath fading simulator
multi frequency network
magnesium / Magnesium / lat. magnesium / 12 protons
media gateway control protocol
mobile global title
Multimedia and Hypermedia coding Experts Group
multimedia handling node
multimedia home platform
message handling system
mobile handling system
message handling unit
mast head unit
megahertz (1E6/s)
message identifier
mobile Internet access
management information base
Men in black (Film)
mobile interface controller
mobile internal call (intra MSC)
Management Integration Consortium
microphone
message identifier
multiplexing identifier
media independent interface
multi-purpose Internet mail extensions
mini digital video tape (digital video tape format, 500 lines of horizontal resolution)
multimedia in integrated networks and terminals
million instructions per second
management information service entity/element
management information tree
Massachusetts Institute of Technology
multi-longitudinal mode
meridian lossless packing
microwave landing system
mobility management
multimedia mobile access communication [system]
machine-understandable meta-data broadcasting
mobile to mobile call (inter MSC)
mobile management entity
multi-mode [optical] fiber
man machine interface
man machine language
mobile multimedia
Mannesmann Mobilfunk
memory management unit
multimedia extension [Intel]
früherer ÖN-Geschäftsbereich "Mobile Netze"
Autokennzeichen Unterallgäu
manganese / Mangan / lat. manganum / 25 protons
management network access point
mobile network code
mobile network colour code
mobile network call control - services access point
mobile network management application service element
mobile network operator
mobile station not reachable flag
modulated noise reference unit
mobile network signaling
mobile network short message service - services access point
mobile network supplementary services - services access point
managed object
magneto-optical
molybdenum / Molybdän / lat. molybdaenum / 42 protons
mobile originated point to point message
mobile originated call
managed object class
magneto-optical drive
modulator / demodulator
managed optical distribution frame
multicast extensions to OSPF
memorandum of understanding
multilink [point to point] protocol
main processor (EWSX)
microprocessor
module processor complex
main processor control card
management protocol data unit
Motion Pictures Expert Group
MPEG-1 (MPEG standard version 1)
MPEG-2 (MPEG standard version 2 / multichannel audio system) [Philips]
multipoint link aggregation
multi-protocol label switching
multiple pulse metering
multi-protocol over ATM
multiple party service
main processing unit
MPEG-1 audio layer3
mobile radio conference
mobile roaming number
multi router traffic grapher
millisecond
mobile station
multiplex section
memory stick [Sony] (flash RAM module standard)
multiplex section adaptation
mobile [digital] satellite broadcasting
most significant bit
mobile [services] switching center
mobile station classmark
mobile service control point
mobile station control unit
multiservice switching forum
message
multiple serial interface
mobile subscriber identification number
mobile subscriber ISDN number
main storage module
multiple subscriber number
multiple systems operator
multiplex section overhead
maintenance service provider
multiplex section protection
mobile station roaming number
MAN switching system
mobile satellite service
mobile service switching point
multiplex section termination
message signaling unit
mobile terminated/termination
message type
meitnerium / Meitnerium / 109 protons
mobile terminated point to point message
mobile termination type 0
major trading areas
Metallic Test Access
medizinisch-technische Assistentin
mean time between failures
mobile terminated call
mobile termination controller
magnetic tape drive
mobile terminating equipment
message table handler
maximum time interval error
mobile to mobile call
message transfer part
message transfer protocol
message transfer protocol - OSI layer 1
message transfer protocol - OSI layer 2
message transfer protocol - OSI layer 3
message transfer service
MPEG2 transport system
mobile test station
memory time switch CMOS chip
mean time to failure
mean time to repair
multi twin axial cable link 3
message unit
memory unit
multiplexer / demultiplexer
multi user mobile station
mobile user part
multiplexer
multi-vendor integration protocol
milliwatt
megawatt (1E6 watt)
Mobile Wireless Internet Forum
mail exchanger
nitrogen / Stickstoff / lat. nitrogenium / 7 protons
narrowband AMPS (with 10 kHz channel spacing)
narrowband integrated services digital network
narrowband ISDN user part
narrowband network node interface
network operation system function
narrowband PCS
narrowband passive double star
narrowband subscriber line terminal
not applicable|available
sodium / Natrium / lat. natrium / 11 protons
network-wide automatic call distribution
North American Digital Cellular
network access mode
narrowband advanced mobile phone system
North American Network Operators Group
network access provider
network access point
network address port translation
[U.S.] National Aeronautics and Space Administration
network address translation
north american telephone system
Newbridge
narrowband
normal burst
niobium / Niob / lat. niobium / 41 protons
node B application part
networking broadband services
NetBIOS over TCP/IP
not connected
network connection
network code
network computer
network color code
network centric computing
new common carriers
network call correlation identifier
notification channel
network control key
[U.S.] National Center for Supercomputing Applications
neodymium / Neodym / lat. neodymium / 60 protons
national destination code
network driver interface specification
Novell directory services
network determined user busy
network element (Netzwerkelement)
network entity
neon / Neon / lat. neon / 10 protons
network element function
network element management layer
nominal error rate
norme européenne de telecommunications
NetBIOS extended user interface
near end cross talk
network function
Niederfrequenz
non frame alignment signal
network file system
network file services
[U.S.] National Science Foundation
next generation internet
non-geostationary orbit
non-geostationary orbit fixed-satellite service
next hop resolution/routing protocol
national indicator
network indicator
NodeIntegrator [Siemens]
nickel / Nickel / lat. niccolum / 28 protons
Network Information Center
network interface card
network independent clocking
nickel cadmium
[U.S.] National Institute of Health
nickel metal hydrid
not installed
[U.S.] National Institute of Standards and Technology
narrowband information transfer bearer capability
network identity and time zone
next-level aggregation
[U.S.] National Library of Medicine
natural/native language support
network management
network management center
national maintenance center
Network Management Forum
non-maskable interrupt
network management layer
network management procedures
nuclear magnetic resonance
regional network management
network management system
national mobile subscriber identification/identity
nuclear magnetic resonance
Nordic Mobile Telephone
network node
non nominatum (unbenannt)
network node interface
network news transfer protocol
nobelium / Nobelium / lat. nobelium / 102 protons
network operation center
not operational
no operation
network performance
neptunium / Neptunium / lat. neptunium / 93 protons
network parameter control
network protocol control information
numbering plan identifier
non real time
Narita (Tokyo International Airport)
non real time - variable bit rate
non return to zero
network supervision
[U.S.] National Security Agency
network service access point
network service access point identifier
network service data unit
network service provider
network service part
network service provider Internet exchange point
network and switching subsystem
network termination
new technology
non transparent
New Technology
notification [service access point]
network termination 1 (between reference points T and U)
network termination 2 (between reference points S and T)
network termination for basic access
network traffic management
network time protocol
network termination for PCM 30
navigation transmitting system
Nippon Telegraph & Telephone Company (Nippon Denshin Denwa Kabushikigaisha)
network user access
nailed-up connection
network user identification
network user part
network
nanowatt (1E-9 watt)
oxygen / Sauerstoff / lat. oxygenium / 8 protons
operation and maintenance
Optimized Network Evolution [Siemens]
Optimized Network Evolution Universal Platform [Siemens]
outgoing access
Autokennzeichen Oberallgäu
operation, administration, and maintenance
optical add drop multiplex
operator alarms
OEM adaptation layer
Autokennzeichen Ostallgäu
operation, administration, and maintenance
optical bus interface extension
open business network
O&M system for Base Station Release x
optical carrier 12 [622 Mbps]
optical carrier 3 [155 Mbps]
optical carrier with STS-3c frame structure
optical carrier 48 [2.4 Gbps]
operationally controlled announcement equipment
outgoing calls barred [within the CUG]
ODMA common control channel
out of cell delineation
operator controlled input
open computer network [NTT]
office channel unit
office data area generator
operator determined barring
ODMA dedicated control channel
ODMA dedicated channel
open datalink interface
object definition language
opportunity driven multiple access
optical distant terminal
ODMA dedicated traffic channel
original equipment manufacturer
optical fiber cable type C
optical fiber cable type D
Optical Fiber Distributed Concentrator
orthogonal frequency division multiplexing
Offer Processing Tool
optical fiber splitter box
overhead
optical interface for 21* 2 Mbps
object linking and embedding
overall loudness rating
optical line termination
optical line termination broadband
optical line terminal mux1
operation and maintenance
operation, maintenance and administration part
operation and maintenance center
operation and maintenance center for BSS
operation and maintenance center for SSS
operation and maintenance center radio part
operation and maintenance center switch part
optical multifiber fanout cable
Object Management Group
operation and maintenance interface
operation and maintenance link
operation and maintenance processor (OMC-S)
operation and maintenance processor for BSS
operation and maintenance processor for SSS
operation and maintenance subsystem
operation and maintenance terminal
override network delay
optical network unit
optical network unit broadband
out of frame
on/off keying
out of service
origination point code
OLE for process control
open platform for secure enterprise connectivity
optimal routing
ODMA random access channel
object request broker
operations system
operating system
osmium / Osmium / lat. osmium / 76 protons
open service architecture
open software description
Open Software Foundation
operations system function
offset field
open systems interconnection
OSI reference model
OS specific module
open settlement protocol
open shortest path first
O&M for Switching Subsystem Release x
optical disk [Sun]
operator service system
operations support system
operator specific service
operation subsystem (GSM)
optical service unit
optical time domain reflectometry
Open User Recommended Solutions
[Japanese] original video animation
overvoltage protection
Ortsvermittlungsstelle
phosphorus / Phosphor / lat. phosphorus / 15 protons
path alarm indication signal
processor bus
path far end block error
path far end receiving failure
primary GSM
point to multipoint
private-public network node interface
path remote defect indication
palmsize personal computer resp. palm/PC (Taschencomputer)
primary rate access
power amplifier
protactinium / Protactinium / lat. protactinium / 91 protons
private automatic branch exchange
packet associated control channel
personal access communications system
personal air communications technology
packet assembler/disassembler
padding [field]
packet access grant channel
phase alternated line
primary access method
pulse amplitude modulation
public access mobile radio
password authentication protocol
PNNI augmented routing
publicly available specification
port and address translation
lead / Blei / lat. plumbum / 82 protons
peripheral board controller
packet broadcast control channel
policy based networking
peak bit rate
physical backing storage
private branch exchange
personal computer
priority control
personalization center
power control
personal computer
PCMCIA card (new name)
printed circuit board
paging control channel
paging channel
protocol control information
peripheral channel interface
peripheral components interconnection [Intel]
pulse code modulation
Personal Computer Memory Card International Association
people cannot memorize computer industry's acronyms
PCM interface
personal communication network
point of control and observation
processor control panel
peripheral control platform
peripheral control platform operating system
peak cell rate
preventative cyclic retransmission
Personal Communication System [1850-1910 MHz uplink, 1930-1990 MHz downlink]
personal communication services
personalization center for SIM
processor control switch
Pacific Communications Sciences Inc.
packet control unit
protocol discriminator
palladium / Palladium / lat. palladium / 46 protons
personal digital assistant
primary digital carrier
primary domain controller
Personal Digital Cellular (Japanese system)
Pacific Digital Cellular
Personal Digital Cellular - packet
plan - do - check - act
packet data channel
portable document format
plesiochronous digital hierarchy
Pulsdauermodulation (PLM)
packet data network
public data network
packet data protocol
programmed data processor type 11 [DEC]
passive double star
packet duplex synchronous
PIN diode switch
protocol data unit
positive ECL
Pan European Digital Cellular
peak emission interval
privacy enhanced mail
peak envelope power
pulse frequency modulation (Pulsfrequenzmodulation)
peripheral group
pretty good privacy
page group section
packet handler
packet handler interface
Personal Handyphone System (Japanese system)
physical layer [protocol]
physical channel
protocol identifier
presentation indicator
PHS Internet Access Forum
PHS Internet Access Forum standard
protocol implementation conformance statement
packet identification
product identification data
personal identification number
positive intrinsic negative diode
private integrated services network
Plug-in Position
Produktkommission
public key infrastructure
Produktkommissionssitzung
parity logic
physical layer
procedural language / structured query language
party line card
plastic leaded chip carrier
physical layer convergence protocol
permanent logical link [layer]
phase locked loop
pulse length modulation (Pulsdauermodulation)
product line manager
public land mobile network
planning system
physical medium
performance management
phase modulation
pulse modulation
product manager
promethium / Promethium / lat. promethium / 61 protons
performance management / continuity check
peripheral module channel
physical medium dependent
periodic multiple pulse metering
point to multipoint
protected monitor point
private mobile radio
position multiplex
personal number
port number
packet notification channel
présentation des normes européennes
PNP group identification
portable network graphic
private network-network interface
public network operator
private numbering plan
polonium / Polonium / lat. polonium / 84 protons
Policy oversight Committee
policing control element
Post Office Code Standardization Advisory Group
plastic optical fiber
path overhead
point of interface/interconnection
status request (poll status)
passive optical network
point of presence
post office protocol
post office protocol version 3
Portugal
point of sale
packet over SONET
plain old telephone
plain old telephone service/system
peak to peak
point to point
prepaid card service
palmsize personal computer resp. palm/PC (Taschencomputer)
packet paging channel
partial packet discard
parts per million
plastic pin array
pulse phase modulation
pulse position modulation
periodic pulse metering
[Internet] point-to-point protocol
packets per second
pulses per second
prepaid service
prepaid service center
packet payload type
point to point tunneling protocol
plastic quad flat pack
path replacement
praseodymium / Praseodym / lat. praseodymium / 59 protons
packet random access channel
pseudo random bit/binary sequence
primary rate interface
progressive and revolutionary integration on service media
protocol reference model
programmable read-only memory
service provider number
premium rate service
protection switching
peripheral switch
portable station
power supply
port specific
proxy signaling agent
presentation services access point
peripheral switch clock
packet structure description language
packet switched data network
processor switch interface
phase shift keying
packet server module
peripheral switch multiplexer
pit signal processing
packet switched public data network
peripheral switch timestage
public switched telephone network
power supply unit
payload type
platinum / Platin / lat. platinum / 78 protons
peripheral terminal adapter (with 4 V.24 interfaces)
Parent-Teacher Association
packet transfer controller
packet traffic channel
peripheral terminating group
payload type identifier
point to multipoint
public telecommunication operators
point to point
post, telegraph, and telephone
processing unit
pull up
plutonium / Plutonium / lat. plutonium / 94 protons
permanent virtual connection
permanent virtual circuit
polyvinyl chloride (Polyvinylchlorid)
permanent virtual channel connection
permanent virtual path connection
printed wire board
pulse width modulation
standard for layer management [ITU-T]
part of DSS2 standard to support point-to-point connections [ITU-T]
standard for the management of SS7 signaling networks [ITU-T]
protocol stack standard for OSI layers 1-3 [ITU-T]
protocol stack standard for OSI layers 4-7 [ITU-T]
standard for traffic management [ITU-T]
standard for customer administration [ITU-T]
management interface standard [ETSI, ITU-T]
Q3 presentation server
Q-adaptor
Q-adaptor function
Quadratur-Amplituden-Modulation
queueing delay
[German version of Q3]
quantizing distortion unit
quad modular redundancy
quality of service
quality of service signaling
quadrature phase shift keying
(interface between element manager and NE)
signaling at Q reference point
lean Q interface
router
rate adaptation
routing area
rural area
radium / Radium / lat. radium / 88 protons
random access burst
research and development in advanced communications technologies in Europe
random access [control] channel
remote authentication dial-in user service
rate adaptive asymmetric digitial subscriber line
recorded announcement equipment
remote alarm indication
random access memory
radio access network
radio access network application part
random number
remote access server
reserved for administrative use
rubidium / Rubidium / lat. rubidium / 37 protons
residential broadband
radio base station controller
residual bit error rate/ratio
regional bell operating company
radio base station
rack cabling access panel
radio common carriers
receive channel control block
radio channel identifier
radio clock interface
radio control/carrier station
reverse charging service
radio central unit
radio data link access protocol
relational data base management system
resource description framework
remote defect indication
radio data system
radio digital terminal
radio distribution unit
rhenium / Rhenium / lat. rhenium / 75 protons
random early detection
release message (B-ISUP)
residual excited linear predictive [Motorola]
resume message (B-ISUP)
remote entry terminal
reverse charging
radio frequency (Hochfrequenz)
rutherfordium / Rutherfordium / 104 protons
Ready for Acceptance
request for comments
radio frequency channel
radio frequency channel
radio frequency channel number
remote forwarder function group
radio frequency interference
remote failure indicator
RF loop back
reserved for future use
regenerator [section] (F1)
rhodium / Rhodium / lat. rhodium / 45 protons
resource handling subsystem
radio identity code
resistor - inductor - capacitor [circuit]
radio interface connection element
receiving Internet end system
routing information protocol
raster image processor
réseau(x) IP européen(s) / network coordination centre
reduced instruction set computer
radio-in-the-loop
radio interface transmission management
receiving interworking unit
Rahmenkennungswort
release complete message (B-ISUP)
radio link control
run-length code
radio link control protocol
radio link interface
radio link protocol
receiver loudness rating
remote line switch
resource management
resource monitoring
radio management
regional maintenance center
remote method invocation
remote network monitoring
radon / Radon / lat. radon / 86 protons
radio network controller
receiver not operational
radio network repeater
radio network system
radio network subsystem
radio network subsystem application part
radio network termination
radio network temporary identity
residential office / branch office
remote operation interface
return on investment
read-only memory
remote operation service
remote operations service element
rack over-temperature
release planning
redundant path combining
radio port controller unit
regular pulse excited long term prediction
resource-platform interface
recognised private operating agency
receive ready
radio resource
radio regulations
radio resource control
radio resource management
radio resource state machine
radio signaling
resynchronization [command]
regenerator section
resynchronization acknowledge
reduced speed ATM
routing services control point[Newbridge]
radio system entity
realm specific Internet protocol
radio signaling link
regenerator section overhead
radio subsystem
received signal strength indication
regenerator section termination
Remote Switching Unit
resource reservation protocol
répondez s'il vous plaît (bitte antworten)
regional subscription zone identity
radio terminal
remote terminal
real time
real time variable bit rate
radio terminal controller
realtime transport control protocol
read the fucking manual
real time operating system
rack temperature out of tolerance
real-time transport protocol
residual time stamp
reliable transfer service element
real-time streaming protocol
ruthenium / Ruthenium / lat. ruthenium / 44 protons
remote work station
receive/receiver
receiver antenna module and multicoupler
receiver board
receiver filter
receiver multicoupler
receiver distributor post amplifier
receiver unit
return to zero
Rechenzentrum (computer center)
sulfur / Schwefel / lat. sulfur / 16 protons
media & switching services interface
transport protocol interface
service provider interface
secure multipurpose Internet mail extensions
signal to noise [ratio]
serial/parallel converter
signaling ATM adaptation layer
service operation system function
security association
stand alone
service aspects and applications
set asynchronous balanced mode
signaling ATM adaptation layer
service access code
slow associated control channel
SRTS ACM clock element
single association control function
source address field
stored announcement group
Siemens AG
service alarm indication
subsequent address message (B-ISUP)
stand alone main processor
service advertising protocol
service access point
service access point identifier/indicator
segmentation and reassembly
segmentation and reassembly - service data unit
secure application service
stand alone test,
surface acoustic wave (akustische Oberflächenwelle)
synchronisation burst
scheduler block
antimony / Antimon / lat. stibium / 51 protons
S0 bus controller
spare board relay
statistical bit rate
sustained bit rate
Siemens Base Station [system]
Siemens Business Services
service center
service code
scandium / Scandium / lat. scandium / 21 protons
shelter cable access panel
synchronization control channel
signaling connection control part
service creation environment
speech coding experts group
service creation environment point
synchronization and coordination function
service control function
SMU clock generation [unit]
synchronization channel
send charging information
subscriber controlled input
scalable coherent interface
Siemens configuration language
SCCP connection-less control
software configuration management
supply chain management
service class mark
status control manager
short circuit module
signal connection module
sub-channel number
Siemens Corporate Network
satellite communication operator
synchronous connection-oriented
SCCP connection oriented control
service control point
standard concept routing
sustainable cell rate
SCCP routing control
signal computing system architecture
small computer standard interface
server cache synchronization protocol
single call transfer
simple computer telephony protocol
service center time stamp
speech composition unit
service definition
sequenced data
signal degrade
speech or data channel
secondary digital carrier
stand-alone dedicated control channel
subscriber dependent digit processing and feature control
service data function
synchronous digital hierarchy
synchronous digital hierarchy object model
SDH transceiver
software development kit
structured design language
simplified data link
specification and description language
space division multiplex
synchronous digital [line] module
space|spatial division multiple access
secure digital music initiative
synchronous discrete multi-tone
sequenced data with poll
special drawing rights
synchronous dynamic RAM
symmetric digital subscriber line
structured data transfer
service data unit
service element
switching element
selenium / Selen / lat. selenium / 34 protons
support entity function
severely errored frame
severely errored framing seconds
security experts group
signaling end point
scaleable encryption processing
severely errored second
secure European systems for applications in a multivendor environment
secure electronic transaction
start frame delimiter
slow frequency hopping
single frequency network
seaborgium / Seaborgium / 106 protons
switch group control
standard generalized markup language
serving GPRS support node
super high frequency (3 GHz - 30 GHz)
secure hypertext transfer protocol
service indicator
status indication
system integration
Système International
silicon / Silicium / lat. silicium / 14 protons
status indication busy
service independent building block [Siemens]
security ID (=identification)
subscriber identification
status indication emergency alignment
signaling virtual channel
signaling virtual channel connection
signaling link terminal
subscriber identity module (subscriber identification module)
signaling management processor
Siemens Multiplexer
status indication normal alignment
service information octet
status indication out of alignment
status indication out of service
SMDS interface protocol
status indication processor outage
sustained information rate
signal-to-interference ratio
shelter in service
supervisory and information system for local and remote areas [Siemens]
Siemens Variable Packaging System
service key
simple key management for internet protocols
synchronous line equipment
service level agreement
signaling link control
subscriber line circuit analog
subscriber line circuit digital
subscriber line interface
subscriber line measurement equipment
serial line Internet protocol
signal label mismatch
subscriber line module
subscriber line module, analog
subscriber line module, broadband
subscriber line module, digital
service location protocol
service logic program
send loudness rating
signaling link test
signaling link termination
subscriber line termination
signaling link test message
security management
synchronous multiplexer
statistical multiplexing
smart media (flash RAM module standard)
samarium / Samarium / lat. samarium / 62 protons
short message application layer
short message relay layer
synchronous multiplexer for STH1 [Siemens]
system management application entity
system management application process/part
specific management application service element
server message block
system management bus
submultiplex channel
surface mounted device
storage module drive
synchronous multiplexer for STH2 [Siemens]
switched multi-megabit data service
short message entity
single mode fiber
special mobile group
synchronized multimedia integration language
service management layer
service management network
service management point
short message peer to peer
short message service
service management system
systems management server [Microsoft]
short message service mobile terminated
short message service, point to point
short message service center
short message service center
short message service cell broadcast
statistical multiplex subunit
short message terminal
station management
surface mount technology
simple mail transfer protocol
statistical multiplexing unit
statistical multiplexing control [unit]
statistical multiplexing data [unit]
subscriber number
signaling number
service number
sequence number
service node
switching network
früherer ÖN-Geschäftsbereich "Schmalbandnetze"
tin / Zinn / lat. stannum / 50 protons
systems network architecture
subnetwork access point / protocol
Siemens Node Application Programming Interface
Societé Nationale des Chemins de Fer Fran&cs;ais
sub-network dependent convergence function
subnetwork dependent convergence protocol
satellite news gathering
Siemens-Nixdorf Informationssysteme
service node interface
subscriber network interface
simple network management protocol
sequence number protection
serial number
signal to noise ratio
start of authority
suppress outgoing access
statement of compliance
section overhead
small office / home office
solar heliocentric observatory
synchronous optical network
support of optimal routing
service provider
signaling point
speech path
spare position
signaling point code
stored program control
service provider control key
Sozialdemokratische Partei Deutschland
synchronous payload envelope (STS container)
shortest path first
security parameter index
subsequent protocol identifier
synchronous physical interface
single pulse metering
speech multiplexer
support of private numbering plan
supplementary power supply unit
signal processing unit
service provision units
soft permanent virtual connection
soft permanent virtual channel connection
sequenced packed exchange
structured query language
Siemens Quailty Standard
synchronous repeater
strontium / Strontium / lat. strontium / 38 protons
signed response
service resource function
speech recording interface
serving radio network controller
serving radio network subsystem
spatial reuse protocol
shared registry system
synchronous residual time stamp
speech recording unit
supplementary services
subsystem
single star
signaling system number 7
signaling system number 7
session service access point
single side band [modulation]
service specific coordination function
service specific coordination protocol
service specific convergence sublayer
service support data
system status display
service switching function
space stage group
service selection gateway
server side includes
secure sockets layer
synchronization status messages
space stage module
subsystem number
signaling system network control
simultaneously switching output
special services provider
service switching point
switching subsystem
synchronization supply unit
signaling terminal
segment type
solicited status response
set-top-box
signaling terminal control
signaling transport converter
signaling terminal equipment
start field
scanning tunneling microscope
synchronous transfer mode
synchronous transfer mode level 1 [155.520 Mbps]
synchronous transfer mode level 1 [2,488.320 Mbps]
synchronous transfer mode level 4 [622.080 Mbps]
synchronous transport module level N concatenated
subscriber test multiple access
Störmeldeeinrichtung Kabeltyp A
side tone masking rating
shelter temperature out of tolerance
signaling transfer point
shielded twisted pair
service tool set
synchronous transport signal level 3 concatenated (155.52 Mbit/s)
synchronous transport system level N
Syndicat des Travailleurs et Travailleuses des Postes (postal workers union)
signal unit
subscriber unit
single user account
served user generated reference
Stanford University Network
suspend message (B-ISUP)
switched virtual connection
switched virtual circuit
switched virtual channel
signaling virtual channel
super video home system (analog video tape format, 400 lines of horizontal resolution)
software version number
switched virtual path
software
shared wireless access protocol
shared wireless access protocol - cordless access
software management
strengths, weaknesses, opportunities & threats
standing wave ratio
synchronous cross connect
Siemens Cross Connect (former Netzknoten 2000)
synthesizer board
system description
system panel
system panel display
transparent / not transparent
transmission at DS1 [ 1.544 Mbps]
transmission at DS2 [ 6.312 Mbps]
transmission at DS3 [ 44.736 Mbps]
transmission at DS4 [274.176 Mbps]
transmission at DS1 [ 1.544 Mbps]
transmission at DS2 [ 6.312 Mbps]
transmission at DS3 [ 44.736 Mbps]
transmission at DS4 [274.176 Mbps]
terminal adapter (between reference points S and R)
technical advisory
tantalum / Tantal / lat. tantalum / 73 protons
type approval code
technical assistance center
transaction code
Total Access Communications System
test adapter for serial interface
terminal adapter function
time alignment flag
traditional access provider
telephony application programming interface
trace buffer
terbium / Terbium / lat. terbium / 65 protons
to be determined/defined
to be repaired
transaction capabilities
transmission convergence
traffic control
tecnical committee
technetium / Technetium / lat. technetium / 43 protons
transaction capabilities application part
transcoder board
transaction control block
target control block
traffic control & congestion control
transmit channel control block
transcoding equipment
traffic channel
total control hub
tag control information
transceiver control interface
time compression multiplexing
total cost of ownership
transmission|transport control protocol
transmission control protocol / Internet protocol
trusted computer security evaluation criteria
terminal connection unit
transcoding unit (transcoding and data rate adaptation board)
time division - code division multiple access
time division - synchronous code division multiple access
time division duplex
time division multiplexing
time division multiplex / synchronous transfer mode
time division multiple access
time division multiple access / time division duplex
tag distribution protocol
trigger detection point
time domain reflectometry
terminal equipment
transit exchange
tellurium / Tellur / lat. tellurium / 52 protons
traffic engineering - resource reservation protocol
terminal equipment type 1 (at reference point S)
terminal equipment type 2 (at reference point R)
technical description
terminal endpoint identifier
test mobile system
Trans European Trunked Radio
telecommunication function
transmission failure
transfer allowed
transport function|format combination indicator
transport format indicator
temporary frame identifier
transfer prohibited
terrestrial flight telephone system
thorium / Thorium / lat. thorium / 90 protons
Tomlinson Holman eXperiment (video/audio quality standard)
transaction identifier
Texas Instruments
titanium / Titan / lat. titanium / 22 protons
Telecommunications Industries Association
transaction identifier
tunneling identifier
time intervall error
transmitting Internet end system
tag image file format
trace identifier mismatch
telecommunications information networking architecture
TINA consortium
tele-info service
transmitting interworking unit
thallium / Thallium / lat. thallium / 81 protons
top-level aggregation
top level domain
temporary logical link identifier
trunk line maintenance
transport layer security
type, length and value
traffic management
timing marker
thulium / Thulium / lat. thulium / 69 protons
trunk module broadband [Siemens]
time management clock
timeslot management channel
transition minimized differential signaling
timing marker event
telecommunication management network
traffic management procedures
triple module redundancy
tower mounted receiver preamplifier
telecommunication management system
test mobile station
time management services
temporary mobile subscriber identity
termination node
transit network selection
time of day
tone generator
transport overhead
type of number
transmission path (F3)
terminal portability
transmit power control
transfer protocol data unit
tag protocol identifier
three party service
transceiver and processor unit
Turbo-Pascal unit
transfer relay
technical report
technical requirement
transcoding and rate adaptation card
traffic management operations system (performance management) [Siemens]
transcoding and rate adaptation unit
transcoder
transceiver = transmitter/receiver
Teleservice
traffic shaping
time slot
time stamp
Telecommunication Standardization Advisory Group [ITU-T]
transport service access point
telephony services API
transceiver speech & data interface
time stage group
time stage incoming
time stage module
time stage outgoing
time sharing option [IBM]
telephony service provider interface
terminate and stay resident
telecommunication switching system
time sharing system
Telecommunication Technology Committee
tree and tabular combined notation
trunk test equipment
time to live (counter in IP packet)
transistor-transistor logic
Tôkyô Tsûshin Network
text to speech
Tut-Tera Teksajxo (WWW in Esperanto)
Telex-Teletex-Umsetzer
tele typewriter / Teletype
test unit
trunk user part
Technische Universität
total user cell number
telephone user part
tele-voting
television
temporary virtual connection
trunk workstation [Siemens]
transmitter
transmitter channel filter unit
transit exchange based subscriber
transmitter unit
uranium / Uran / lat. uranium / 92 protons
universal ADSL
UMTS MSC
unauthorized access
universal access number
universal asynchronous receiver/transmitter
unavailable second
Universal ADSL Working Group
unspecified bit rate
University Corporation for Advanced Internet
usage data collector [Siemens]
user defined field
unrestricted digital interface (64 kbps ISDN data)
unrestricted digital information
uni-directional link routing
user datagram protocol
unit data message
unstructured data transfer
user equipment
user equipment with ODMA relay operation enabled
ultra high frequency (300 MHz - 3 GHz)
unit interval
user interactive dialog
user identity module
user in service
user interface support function
uplink
user management entity
Japanese: "plum" / jap. "Pflaume"
usage metering function
universal modeling language
universal mobile personal telecommunications system
universal mobile telecommunications system
universal number
unequipped [signal label]
user network interface
user out of service
user part
usage parameter control
user packet channel
universal peripheral interface
universal plug and play
uninterruptible power supply
United Parcel Service
universal personal telecommunication
UTRAN registration area
uniform resource locator
United States of America
United States of America
universal serial bus
user specific channel
universal supervisory center
uplink state flag
UMTS subscriber identity module
unstructured supplementary service data
unsolicited status response
universal time coordinated
universal test and operations physical interface for ATM
unshielded twisted pair
universal|UMTS terrestrial radio access
universal|UMTS terrestrial radio access network
UMTS radio interface
UNIX to UNIX encoding
user to user information/indication
user to user signaling
user to user signaling service 1
unit under test
vanadium / Vanadium / lat. vanadium / 23 protons
video on 8mm tape (analog video tape format, 240 lines of horizontal resolution)
voice activity detection
voice activated dialing
very high bitrate asymmetric digital subscriber line
value added network
Videotext access point
value added reseller
value added service
virtual backbone network
very high-speed backbone network service
variable bit rate
variable bit rate - non real time
variable bit rate - real time
voice broadcast service
virtual channel (F5)
virtual container (SDH)
virtual connection
virtual circuit
virtual channel type 4
virtual channel alarm indication signal
virtual channel far end receive failure (now: VC-RDI)
virtual container level n (SDH)
virtual channel remote failure indication
virtual channel connection
virtual card calling
virtual channel connection endpoint
virtual channel identifier
virtual channel link
virtual core node
voltage controlled oscillator
virtual CPU
virtual channel trail termination point
Verein der Deutschen Elektriker
voice and data integration
very high-speed digital subscriber line [52 Mbps downlink, 320 kbps uplink]
video display unit
Vermittlungseinrichtung (exchange equipment)
voice frequency
voice group call service
very high bitrate digital subscriber line
virtual home environment
very high frequency (30 MHz - 300 MHz)
video home system (analog video tape format, 240 lines of horizontal resolution)
VLAN identifier
virtual LAN
very large enterprise
very low frequency (3 kHz - 30 kHz)
visitor location register
very large scale integration
voice mail
virtual machine
voice mail center / unified messaging
voice mail system
voice mail system center
visited mobile-services switching center
center for traffic measurement (Verkehrsmanagementzentrum) [Siemens]
switch exchange (vermittelnder Netzknoten) [Siemens]
video object
voice over broadband
video on demand
voice over digital subscriber line
voice over frame relay
voice over IP
tele-voting [Siemens]
virtual path (F4)
virtual path alarm indication signal
virtual path far end receive failure (now: VP-RDI)
virtual path remote failure indication
virtual path connection
virtual path connection endpoint
virtual path connection identifier
virtual private data network
virtual path group
visited PLMN
virtual path identifier
virtual path link
virtual private network
virtual path terminator
virtual path trail termination point
virtual redundancy check
virtual reality modelling language
virtual router redundancy protocol
voice response unit
virtual scheduling algorithm
very small aperture terminal
vertical sideband [modulation]
Videotext service center
virtual switched network
Vermittlungsstelle (exchange)
voltage standing wave ratio
virtual terminal
Verband der Telekommunikations- & Mehrwertdiensteanbieter
voice and telephony over ATM
virtual terminal protocol
wolfram / Wolfram / lat. wolframum / 74 protons
wideband code division multiple access
wireless local area network
wireless PBX
World Wide Web Consortium
Windows applications binary interface [SunSoft]
wide area information service
wide area network
wireless application protocol
world administrative radio conference
web cache communication protocol
wavelength division multiplexing
WWW distributed authoring and versioning
weighted fair queueing [Cisco]
world geodetic system
Windows internet naming service
World Intellectual Property Organization
wireless local area network
wireless local loop
wavelength line terminator
world market
windows-icons-menues-pointers
wireless information network
wireless local loop
world market
Weltmeisterschaft (bes. Fußball)
wireless markup language
World Radiocommunications Conference
workstation
work station function
work station support function
wireless telephony applications
world wide web
what you see is what you get
network protocol on network layer level (UNI)
messaging (e-mail) standard [ITU-TS]
 network protocol on network layer level (NNI)
(recommendation for the international numbering plan for public data networks)
cross connect
transcoder
digital subscriber line
xenon / Xenon / lat. xenon / 54 protons
exchange identifier
XpressLink D
cross link
extensible markup language
UNIX SCP
cross update master
cross update slave
yttrium / Yttrium / lat. yttrium / 39 protons
(recommendation for directories on PSDN)
yet another hierarchical object organizer
(internal cell based interface)
ytterbium / Ytterbium / lat. ytterbium / 70 protons
zero effort networks for users
zero administration initiative for Windows
Zentrale Betriebsunterstützung
zone code
zero code sustitution
Zeichengabesystem (signaling system)
zirkonium / Zirkon / lat. zirkonium / 40 protons
centralized mediation function [Siemens]
zinc / Zink / lat. zincum / 30 protons
Zentralvermittlungsstelle (central exchange)
Zentralamt für Zulassungen im Fernmeldewesen
zentraler Zeichenkanal (common channel)

mens AG, ICN M NT 13, Elmar Dünßer