BSS Glossary
Abbreviations and Acronyms
A-GPS Assisted GPS BPA Back Panel Assembly
AMR Adaptive Multi Rate (TC) BSC Base Station Controller
AN Antenna Network (BTS) BSS Base Station (sub)System
AS Access Switch (BSC) BSSGP Base Station System GPRS Protocol (GPRS)
AS Alarm Surveillance (O&M) BTS Base Transceiver Station
ASMB A-ter Submultiplexer BSC CAE Customer Application Engineering
ASMC A-ter Submultiplexer TC CAL Current Alarm List (O&M)
BBU Battery Backup Unit CBC Cell Broadcast Center
BC Broadcast CBCH Cell Broadcast Channel (GSM TS)
BCU Broadcast Unit CBE Cell Broadcast Entity
BCLA BSC Clock A CCCH Common Control Channel (GSM TS)
BCR Broadcast Register CCU Channel Coding Unit
BCU Broadcast Unit CDMA Code Division Multiple Access
BCCH Broadcast Common Control Channel CE Control Element (BSC)
(GSM TS) CEK Control Element Kernel
BCF Base station Control Function (BTS) CIC Circuit Identification Code
BG Border Gate (GPRS) COC Signalling Channel COde
BIE Base Station Interface Equipment CLK Clock
BIEC Base Station Interface Equipment (BSC) CLSI Custom Large Scale Integrated circuit
BIUA Base Station Interface Unit A CMA Configuration Management Application
BSS Glossary
Abbreviations and Acronyms
CMDA Common Memory Disk A EDGE Enhanced Data rates for GSM Evolution
CMFA Common Memory Flash A EGPRS Enhanced GPRS
CPR Common Processor EI Extension interface
CRC Cyclic Redundancy Check EML Element Management Level
CS Circuit Switching (Telecom) EPROM Erasable Programmable Read Only
CS Coding Scheme (GPRS): Memory
CS-1, CS-2, CS-3, CS-4 FPE Functional and Protective Earth
CU Carrier Unit (BTS) FR Full Rate (GSM TS)
DCE Data Circuit Terminating Equipment FR Frame Relay (Telecom)
DDF Digital Distribution Frame FRDN Frame Relay Data Network (Telecom)
DL DownLink FU Frame Unit (BTS)
DLS Data Load Segment FW Firmware
DMA Direct Memory Access GGSN Gateway GPRS Support Node (GPRS)
DRFU Dual Rate Frame Unit GMM GPRS Mobility Management (GPRS)
DRX Discontinuous Reception (GSM TS) GPRS General Packet Radio Service
DSE Digital Switching Element GPU GPRS Packet Unit
DSN Digital Switching Network GS-1 Group Switch of stage 1 (BSC)
DTX Discontinuous Transmission (GSM TS) GS-2 Group Switch of stage 2 (BSC)
DTC Digital Trunk Controller GSL GPRS Signalling Link
DTE Data Terminal Equipment
BSS Glossary
Abbreviations and Acronyms
GSM Global System for Mobile Communications LA Location Area (GSM TS)
GSM TS GSM Technical Specification LAC Location Area Code (GSM TS)
HAL Historical Alarm List (O&M) LAN Local Area Network
HDSL High rate Digital Subscriber Line LED Light Emitting Diode
HDLC High Level Datalink Control LLC Logical Link Control (GPRS)
HLR Home Location Register LSN Local Switching Network
HMI Human Machine Interface MA Mobile Allocation (GSM TS)
HO HandOver MAC Medium Access Control (GPRS)
HR Half Rate MAN MicroBTS Antenna Network (BTS)
HSDS High Speed Data Service MCB Multiplex Channel Block
HW Hardware MCS Modulation and Coding Scheme for EGPRS
ICA Independent Computing Architecture MFS Multi-BSS Fast Packet Server (GPRS)
IDR Internal Directed Retry MCS1 – MCS9
ILCS ISDN Link Controller MLU Massive Logical Update
IMT Installation and Maintenance Terminal MMI Man Machine Interface
(MFS) MMM (3M) Maximum Multiband Mobile Control
IND Indoor (BTS) MO Managed Object (O&M)
IP Internet Protocol MPM Metrica Performance Management
ISDN Integrated Services Data Network MS Mobile Station
IT Intelligent Terminal MSC Mobile Switching Center
BSS Glossary
Abbreviations and Acronyms
MSUM MicroBTS Station Unit Module (BTS) PBA Printed Board Assembly
MW Microwave PBCCH Packet Broadcast Common Control
NMI Non Maskable Interrupt CHannel (GPRS)
NPA Network Performance Analyser PC Personal Computer
NPO Network Performance Optimizer PCCCH Packet Common Control Channel
(GPRS)
NSS Network SubSystem
PCH Paging CHannel (GSM TS)
NTL Network Termination Line
PCM Pulse Coded Modulation
NW Network
PCU Packet Control Unit (GPRS)
OBC On Board Controller
PDCH Packet Data CHannel
OBCI On Board Controller Interface
PDN Packet Data Network (Telecom)
ODMC On Demand Measurement Campaign
(O&M) PLL Phase Locked Loop
O&M Operation and Maintenance PMA Prompt Maintenance Alarm (O&M)
OMC Operation and Maintenance Center PMC Permanent Measurement Campaign
OMC-R Operation and Maintenance Center - (O&M)
Radio PPCH Packet Paging CHannel (GPRS)
OML Operation and Maintenance Link PRACH Packet Random Access CHannel (GPRS)
OMU Operation and Maintenance Unit (BTS) PRC Provisioning Radio Configuration (O&M)
OS Operating System PSDN Packet Switching Data Network
OUT Outdoor (BTS) (Telecom)
BSS Glossary
Abbreviations and Acronyms
PSTN Public Switching Telephone Network SAU Subrack assembly unit (BSC)
(Telecom) SC Supervised Configuration (O&M)
PTP-CNLS Point To Point CoNnectionLeSs data SCC Serial Communication Controller
transfer (GPRS) SCCP Signalling Connection Control Part
QoS Quality of Service SCSI Small Computer Systems Interface
RA Radio Access SDCCH Standalone Dedicated Control Channel
RACH Random Access CHannel (GSM TS) (GSM TS)
RAM Random Access Memory SGSN Serving GPRS Support Node (GPRS)
REK Range Extension Kit SIEA SCSI Interface Extension A
RLC Radio Link Control (GPRS) SM Submultiplexer
RLP Radio Link Protocol (GSM TS) SMLC Serving Mobile Location Centre
RML Radio Management Level SMS Short Message Service
RNO Radio Network Optimisation SMS-CB Short Message Service - Cell Broadcast
RNP Radio Network Planning SRAM Static RAM
RSL Radio Signalling Link SRS SubRate Switch
RTS Radio Time Slot SS7 Signalling System ITU-T N°7 (ex CCITT)
RxLev Received Level SSD Solid State Disk
RxQual Received Quality SW Software
SACCH Slow Associated Control Channel SWEL Switch Element
(GSM TS) TBF Temporary Block Flow (GPRS)
BSS Glossary
Abbreviations and Acronyms
TC Transcoder TS Technical Specification (GSM TS)
TCC Trunk Controller Chip TSS Time Space Switch
TCH Traffic CHannel (GSM TS) TSCA Transmission Sub-System Controller A
TCIL TransCoder Internal Link (BSC)
TCSM TransCoder / SubMultiplexer equipment TSU Terminal Sub Unit (BSC)
TCU TRX Control Unit (Type: TCUA, TCUC) TU Terminal Unit (BSC)
TDMA Time Division Multiple Access UL UpLink
TFO Tandem Free Operation (TC) UMTS Universal Mobile Transmission System
TLD Top Level Design VLR Visitor Location Register
TMA Tower Mounted Amplifier VSWR Voltage Standing Wave Ratio (BTS)
TMN Telecommunication Management WAN Wide Area Network
Network WAP Wireless Application Protocol
TRAC Trunk Access Circuit WBC Wide Band Combiner
TRAU Transcoder and Rate Adapter Unit
TRCU Transcoder Unit
TRE Transceiver Equipment
TRS Technical Requirement Specification
TRU Top Rack Unit
TRX Transceiver
TS Time Slot
