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Trace

This document discusses how to trace protocol signals in a core network and collect diagnostic information about a call. The key steps are: 1. Find the IMSI and responsible module handling a call to trace. 2. Initiate RANAP, RRC, and NBAP tracing for the test IMSI using module commands. 3. Monitor the trace output in hex mode for 20-30 seconds to collect diagnostic information without overloading the system. 4. Save the hex output and decode it using provided scripts to analyze call parameters and troubleshoot issues.

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693 views1 page

Trace

This document discusses how to trace protocol signals in a core network and collect diagnostic information about a call. The key steps are: 1. Find the IMSI and responsible module handling a call to trace. 2. Initiate RANAP, RRC, and NBAP tracing for the test IMSI using module commands. 3. Monitor the trace output in hex mode for 20-30 seconds to collect diagnostic information without overloading the system. 4. Save the hex output and decode it using provided scripts to analyze call parameters and troubleshoot issues.

Uploaded by

jaydeepsadaria
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as TXT, PDF, TXT or read online on Scribd
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We can trace RANAP, NBAP, RRC protocol signals.

Trace can give all core NW parameters, RF parameters (similar to TEMS) listed be low. SGSN PAPU IP /GGSN IP, CPICH Ec-N0 power level, Serve Cell ID, Cell re-selection process, TxCodePwrVal, Data Channel ID, UE ref ID, Traffic class, MaxBitRate, T ype of service customer is using, etc Trace procedure is as follow: Find IMSI of testing number(MO/MT) from HLR; Find responsible MODULE for call through in UER command (i.e. MOD = 60 in listed case); lh mod60 ueidtrace -ue 404240009587126 ( Find card slot of MOD combina tion i.e. 000600 in this case); lh mod60 te e bus_send bus_receive UE_ASN_NBAP ( Initiate NBAP tracing for test IMSI); lh mod60 te e bus_send bus_receive UE_ASN_RRC ( Initiate RRC tracing f or test IMSI); lh mod60 te e bus_send bus_receive UE_ASN_RANAP ( Initiate RANAP traci ng for test IMSI); mon 000600 (Start monitoring in GBP card slot); Open a new window: mscgnr@gumas1n> /opt/ericsson/amos/moshell/monitor6054 10.203.0.196 33 080 (IP of RNC - RNCABD in this case); Trace will start in HEX mode; take HEX output for 20-30 secs only as it increase load in master GPB. Go to previous window: mon- (HEX mode monitoring will stop automatically). Save HEX output in C:\cygwin\home\bsc.gnr\moshell path & In CYGWIN decode HEX ou tput through below command. Cat 3g.log ./decoder/decoder.pl --w10b ./decoder/flow.pl -colour

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