Cellular Network Infrastructure » Radio Access Network » OsmoBTS

Looking at a GSMTAP-logging trace where osmo-bsc sends a channel activation to bts 1, followed by osmo-bts reporting the channel activation request received by bts 0 is confusing.
Of course the osmo-bts process has only one BTS and thus refers to it as "bts 0", the only indication which BTS the logging came from is the source IP address of the GSMTAP.

Theoretically, osmo-bsc could (in some osmocom-specific way) let the osmo-bts process know which bts number it is in osmo-bsc's perspective, and then the GSMTAP logging from each osmo-bts process would match up with the osmo-bsc GSMTAP logging BTS numbers.

Alternatively, the osmo-bts process could refrain from logging any BTS number at all.

Example: the last message here makes you stop and think: "what, bts=0? that must be wrong" ... not

  10535 127.0.0.1      127.0.0.10     GSMTAP   201    52530   4729  (bts=1,trx=0,ts=4,pchan=TCH/F) Allocating lchan=0 as TCH_F
  10537 127.0.0.1      127.0.0.10     GSMTAP   201    52530   4729  (bts=1,trx=0,ts=4,ss=0) state NONE -> ACTIVATION REQUESTED
  10541 192.168.0.10   192.168.0.125  RSL      112                  CHANnel ACTIVation
  10542 192.168.0.125  192.168.0.10   GSMTAP   184    48167   4729  (bts=0,trx=0,ts=4,ss=0) Rx RSL CHAN_ACTIV