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Jason Mercury jmercury616 at gmail.comHi, I am using OpenBSC with nanoBTS 165CU and 165AU models. In normal location update BTS sends CHAN ACT NACK several times for the same ts and ss. After that it sends some failure messages and restart the trx. Here i copy the related logs from openbsc console: Thu Jan 19 15:44:03 2012 <0000> chan_alloc.c:421 (bts=0,trx=0,ts=6,ss=0) starting release sequence Thu Jan 19 15:44:03 2012 <0003> gsm_04_08_utils.c:231 Sending Channel Release: Chan: Number: 0 Type: 2 Thu Jan 19 15:44:03 2012 <0004> abis_rsl.c:579 (bts=0,trx=0,ts=6,ss=0) DEACTivate SACCH CMD Thu Jan 19 15:44:03 2012 <0004> abis_rsl.c:968 (bts=0,trx=0,ts=6,ss=0): MEAS RES for inactive channel Thu Jan 19 15:44:04 2012 <0004> abis_rsl.c:968 (bts=0,trx=0,ts=6,ss=0): MEAS RES for inactive channel Thu Jan 19 15:44:05 2012 <0004> abis_rsl.c:891 (bts=0,trx=0,ts=6,ss=0) CONNECTION FAIL: RELEASING CAUSE=0x01(Radio Link Failure) Thu Jan 19 15:44:05 2012 <0004> abis_rsl.c:621 (bts=0,trx=0,ts=6,ss=0) RF Channel Release CMD due error 1 Thu Jan 19 15:44:05 2012 <0004> abis_rsl.c:968 (bts=0,trx=0,ts=6,ss=0): MEAS RES for inactive channel Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:594 (bts=0,trx=0,ts=6,ss=0) is back in operation. Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:968 (bts=0,trx=0,ts=6,ss=0): MEAS RES for inactive channel Thu Jan 19 15:44:08 2012 <0000> abis_rsl.c:1490 (bts=0,trx=0,ts=6,ss=0) SAPI=0 Thu Jan 19 15:44:08 2012 <0000> abis_rsl.c:1436 (bts=0,trx=0,ts=6,ss=0) ERROR INDICATION cause=Timer T200 expired (N200+1) times Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:621 (bts=0,trx=0,ts=6,ss=0) RF Channel Release CMD due error 1 Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:968 (bts=0,trx=0,ts=6,ss=0): MEAS RES for inactive channel Thu Jan 19 15:44:08 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure Probable cause= 03 00 01 Additional Text=l3_if_dl.c:276Unrecognised signal(1302) Thu Jan 19 15:44:08 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure Probable cause= 03 00 01 Additional Text=l3_if_dl.c:276Unrecognised signal(1302) Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:968 (bts=0,trx=0,ts=6,ss=0): MEAS RES for inactive channel Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:658 (bts=0,trx=0,ts=6,ss=0) RF CHANNEL RELEASE ACK Thu Jan 19 15:44:08 2012 <0000> chan_alloc.c:303 Freeing lchan with state RELEASE DUE ERROR - setting to NONE Thu Jan 19 15:44:08 2012 <0000> abis_rsl.c:1490 (bts=0,trx=0,ts=6,ss=0) SAPI=0 RELEASE INDICATION Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:1322 (bts=0,trx=0,ts=6,ss=0) Activating ARFCN(885) SS(0) lctype TCH/F r=LOCATION_UPDATE ra=0x0f Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:658 (bts=0,trx=0,ts=6,ss=0) RF CHANNEL RELEASE ACK Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:665 (bts=0,trx=0,ts=6,ss=0) CHAN REL ACK but state ACTIVATION REQUESTED Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:1322 (bts=0,trx=0,ts=6,ss=0) Activating ARFCN(523) SS(0) lctype TCH/F r=LOCATION_UPDATE ra=0x0a Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:1060 (bts=0,trx=0,ts=6,ss=0) CHANNEL ACTIVATE ACK Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:856 (bts=0,trx=0,ts=6,ss=0) CHANNEL ACTIVATE NACK CAUSE=0x50(Radio channel already activated) Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:621 (bts=0,trx=0,ts=6,ss=0) RF Channel Release CMD due error 1 Thu Jan 19 15:44:08 2012 <0000> chan_alloc.c:303 Freeing lchan with state RELEASE DUE ERROR - setting to NONE Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:856 (bts=0,trx=0,ts=6,ss=0) CHANNEL ACTIVATE NACK CAUSE=0x50(Radio channel already activated) Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:621 (bts=0,trx=0,ts=6,ss=0) RF Channel Release CMD due error 1 Thu Jan 19 15:44:08 2012 <0000> chan_alloc.c:303 Freeing lchan with state RELEASE DUE ERROR - setting to NONE Thu Jan 19 15:44:08 2012 <0004> abis_rsl.c:1322 (bts=0,trx=0,ts=6,ss=0) Activating ARFCN(523) SS(0) lctype TCH/F r=LOCATION_UPDATE ra=0x0f Thu Jan 19 15:44:08 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure Probable cause= 03 00 01 Additional Text=l3_if_dl.c:276Unrecognised signal(1302) Thu Jan 19 15:44:08 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure Probable cause= 03 00 01 Additional Text=l3_if_dl.c:276Unrecognised signal(1302) Thu Jan 19 15:44:08 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=critical failure Probable cause= 03 00 00 Additional Text=l3_dcm.c:1190 **** ** l3_dcm.c#1190:Cn0x0e: Aborting RF Chan Rel on second attempt ** IPA_SW_FATAL_ERROR ** In task "TRX Proc:L3" @ (37329). **** Thu Jan 19 15:44:09 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=critical failure Probable cause= 03 00 00 Additional Text=TRX Proc:L3:l3_dcm.c#1190 (37329) Thu Jan 19 15:44:09 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure Probable cause= 03 00 01 Additional Text=16395:WARN:OAM_RES:trx_fatal_error_log.c#260:Cn0x0e: Aborting RF Chan Rel on second attempt Thu Jan 19 15:44:09 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=critical failure Probable cause= 03 00 00 Additional Text= [000ad1e8] |000ad230|800d2fe7|800a4144|000ad250| Thu Jan 19 15:44:09 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=critical failure Probable cause= 03 00 00 Additional Text= [000ad278] |00000000|000b91cc|000ad3c4|000ad3c4| Thu Jan 19 15:44:09 2012 <0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure Probable cause= 03 00 01 Additional Text=16396:WARN:OAM_RES:res_trx_status.c#231:TRX is not responding - reinitialising the unit... I could not realize the reason of the problem but i think there is something wrong about the sequence of channel activation, release, ack and nack messages between openbsc and bts. Could somebody help about the solution of this or at give some idea to realize the problem? Thanks Jason -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20120120/522b3020/attachment.htm>