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Bug #4872

closed

BSC reports "abis_rsl.c:143 (bts=2,trx=0,ts=0,pchan_from_config=CCCH+SDCCH4,state=NOT_INITIALIZED) Abis RSL rx CCHAN: mismatching chan_nr=0x90"

Added by lynxis over 3 years ago. Updated over 2 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
-
Target version:
-
Start date:
11/28/2020
Due date:
% Done:

100%

Spec Reference:

Description

When I'm testing my BSC with a centos BTS + fake trx I'm getting lots of the
messages

<0003> abis_rsl.c:143 (bts=2,trx=0,ts=0,pchan_from_config=CCCH+SDCCH4,state=NOT_INITIALIZED) Abis RSL rx CCHAN: mismatching chan_nr=0x90

It's not 100% reproducible, but it sounds like the BSC' fsm for the timeslot is in a wrong state.
My BSC is on 1.6.0-407-g55d7ee57cf57
My BTS is on 1.2.0.332.2edf


Files

ts_not_started.pcapng ts_not_started.pcapng 374 KB lynxis, 11/28/2020 12:28 AM
Actions #1

Updated by pespin over 3 years ago

I have seen this locally today, it happens while BTS is not yet ON (because for instance osmo-trx is not available or still not in POWERON state, TS not configured, etc.)

Actions #2

Updated by pespin over 2 years ago

  • Status changed from New to Feedback
  • % Done changed from 0 to 90

Should be fixed by:
https://gerrit.osmocom.org/c/osmo-bts/+/25691 load_indication.c: Avoid sending if CCCH is still not operational

Actions #3

Updated by pespin over 2 years ago

  • Status changed from Feedback to Resolved
  • % Done changed from 90 to 100

Merged, closing.

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