Cellular Infrastructure

The only capability related to CDR is the capability to write CDRs in CSV format. Related functionality is contained in http://git.osmocom.org/openbsc/tree/openbsc/src/gprs/sgsn_cdr.c which will write format like this:
"timestamp,imsi,imei,msisdn,cell_id,lac,hlr,event,pdp_duration,ggsn_addr,sgsn_addr,apni,eua_addr,vol_in,vol_out,charging_id\n"

It will write CDR records to a text file ("cdr filename NAME") in the following events:

• gprs attach
• routing area update
• gprs detach
• release of mm context
• PDP context activation
• PDP context deactivation
• PDP context termination
• PDP context release
• periodically with a configurable timer ("cdr interval <1-2147483647>")

The internal statistics counters for per-MM-context and per-PDP-context in/out bytes and packets should be readable via the CTRL interface, but this is currenrly broken due to bad choice of naming, see #2362

laforge wrote:

The only capability related to CDR is the capability to write CDRs in CSV format. Related functionality is contained in http://git.osmocom.org/openbsc/tree/openbsc/src/gprs/sgsn_cdr.c which will write format like this:
"timestamp,imsi,imei,msisdn,cell_id,lac,hlr,event,pdp_duration,ggsn_addr,sgsn_addr,apni,eua_addr,vol_in,vol_out,charging_id\n"

Please also see chapter 9.4 of http://ftp.osmocom.org/docs/latest/osmosgsn-usermanual.pdf describing this feature.