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<p class="MsoNormal">Hello All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We are trying to bring up osmo-trx setup in Ettus<span style="color:#1F497D">
</span>USRP B200 Board for Testing CS and PS call . When we tried to do the initial Registration for UE it is failing.<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal">Could you please help to point out what could be the issue and how to resolve this.<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal">Please find below the observation and log snippet for reference:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">After MS power Up Network is getting detected on the MS , Rach is received at BTS , Channel Activation is successful at A-bis interface and later Immediate Assignment is seen in the log.<o:p></o:p></p>
<p class="MsoNormal">After Immediate assignment no further message is observed in Uplink/Downlink and later BSC is releasing the SDCCH/SACCH channel as observed from the log.<o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b>BTS LOG Snippet: <o:p></o:p></b></p>
<p class="MsoNormal"><b><o:p> </o:p></b></p>
<p class="MsoNormal">OsmoBTS# <0000> rsl.c:2209 (bts=0,trx=0,ts=0,ss=4) Fwd RLL msg CHAN_RQD from LAPDm to A-bis<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2290 (bts=0,trx=0,ts=0,ss=0) Rx RSL CHAN_ACTIV<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:926 chan_nr=0x20 type=0x00 mode=0x00<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1344 Activating SDCCH/4(0) on trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1344 Activating SACCH/4(0) on trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1393 Set mode 3, 0, handover 0 on SDCCH/4(0) of trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1458 Set a5/0 uplink for SDCCH/4(0) on trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1458 Set a5/0 uplink for SACCH/4(0) on trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1458 Set a5/0 downlink for SDCCH/4(0) on trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1458 Set a5/0 downlink for SACCH/4(0) on trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:559 (bts=0,trx=0,ts=0,ss=0) Tx CHAN ACT ACK<o:p></o:p></p>
<p class="MsoNormal"><000b> trx_if.c:485 Tx burst length 0 invalid<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2236 (bts=0,trx=0,ts=0,ss=0) Rx RSL IMM_ASS_CMD<o:p></o:p></p>
<p class="MsoNormal"><000b> trx_if.c:485 Tx burst length 0 invalid<o:p></o:p></p>
<p class="MsoNormal"><000b> trx_if.c:485 Tx burst length 0 invalid<o:p></o:p></p>
<p class="MsoNormal"><000b> trx_if.c:485 Tx burst length 0 invalid<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:867 Received incomplete data frame at fn=0 (0/102) for SDCCH/4(0)<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:867 Received incomplete data frame at fn=0 (0/102) for SACCH/4(0)<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2290 (bts=0,trx=0,ts=0,ss=0) Rx RSL DEACTIVATE_SACCH<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1344 Deactivating SACCH/4(0) on trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2290 (bts=0,trx=0,ts=0,ss=0) Rx RSL RF_CHAN_REL<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1344 Deactivating SDCCH/4(0) on trx=0 ts=0<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:519 (bts=0,trx=0,ts=0,ss=0) Tx RF CHAN REL ACK<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:867 Received incomplete data frame at fn=1421484 (12/104) for PTCCH<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:867 Received incomplete data frame at fn=1421484 (12/104) for PTCCH<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2209 (bts=0,trx=0,ts=0,ss=4) Fwd RLL msg CHAN_RQD from LAPDm to A-bis<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2290 (bts=0,trx=0,ts=2,ss=0) Rx RSL CHAN_ACTIV<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:926 chan_nr=0x0a type=0x00 mode=0x00<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1344 Activating TCH/F on trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1344 Activating SACCH/TF on trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1393 Set mode 3, 0, handover 0 on TCH/F of trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1393 Set mode 3, 0, handover 0 on PDTCH of trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1393 Set mode 3, 0, handover 0 on PTCCH of trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1458 Set a5/0 uplink for TCH/F on trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1458 Set a5/0 uplink for SACCH/TF on trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1458 Set a5/0 downlink for TCH/F on trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1458 Set a5/0 downlink for SACCH/TF on trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:559 (bts=0,trx=0,ts=2,ss=0) Tx CHAN ACT ACK<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2236 (bts=0,trx=0,ts=0,ss=0) Rx RSL IMM_ASS_CMD<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:267 Prim for trx=0 ts=2 at fn=1085114 is out of range, or channel already disabled. If this happens in conjunction with PCU, increase 'rts-advance' by 5. (current fn=1436721)<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:1054 Received incomplete TCH frame ending at fn=1436997 (29/104) for TCH/F<o:p></o:p></p>
<p class="MsoNormal"><0006> gsm0503_coding.c:1690 tch_fr_decode(): error decoding FACCH frame (399/456 bits)<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:1104 Received bad TCH frame ending at fn=1436997 for TCH/F<o:p></o:p></p>
<p class="MsoNormal"><0006> gsm0503_coding.c:1690 tch_fr_decode(): error decoding FACCH frame (286/456 bits)<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:1104 Received bad TCH frame ending at fn=1437213 for TCH/F<o:p></o:p></p>
<p class="MsoNormal"><0006> gsm0503_coding.c:1706 tch_fr_decode(): error checking CRC8 for the FR part of an FR frame<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:1104 Received bad TCH frame ending at fn=1438301 for TCH/F<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:1054 Received incomplete TCH frame ending at fn=1438522 (98/104) for TCH/F<o:p></o:p></p>
<p class="MsoNormal"><0006> gsm0503_coding.c:1690 tch_fr_decode(): error decoding FACCH frame (159/456 bits)<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:1104 Received bad TCH frame ending at fn=1438522 for TCH/F<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:1054 Received incomplete TCH frame ending at fn=1438652 (20/104) for TCH/F<o:p></o:p></p>
<p class="MsoNormal"><0006> gsm0503_coding.c:1706 tch_fr_decode(): error checking CRC8 for the FR part of an FR frame<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:1104 Received bad TCH frame ending at fn=1438652 for TCH/F<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2290 (bts=0,trx=0,ts=2,ss=0) Rx RSL DEACTIVATE_SACCH<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1344 Deactivating SACCH/TF on trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:2290 (bts=0,trx=0,ts=2,ss=0) Rx RSL RF_CHAN_REL<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler.c:1344 Deactivating TCH/F on trx=0 ts=2<o:p></o:p></p>
<p class="MsoNormal"><0000> rsl.c:519 (bts=0,trx=0,ts=2,ss=0) Tx RF CHAN REL ACK<o:p></o:p></p>
<p class="MsoNormal"><0006> scheduler_trx.c:867 Received incomplete data frame at fn=1462772 (12/104) for PTCCH<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>BSC log Snippet :<o:p></o:p></b></p>
<p class="MsoNormal"><b><o:p> </o:p></b></p>
<p class="MsoNormal">OpenBSC# <0000> chan_alloc.c:342 (bts=0,trx=0,ts=0,pchan=CCCH+SDCCH4) Allocating lchan=0 as SDCCH<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1727 (bts=0,trx=0,ts=0,ss=0) Activating ARFCN(990) SS(0) lctype SDCCH r=LOCATION_UPDATE ra=0x0d ta=0<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:536 (bts=0,trx=0,ts=0,pchan=CCCH+SDCCH4) Tx RSL Channel Activate with act_type=INITIAL<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=0,ss=0) state NONE -> ACTIVATION REQUESTED<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1456 (bts=0,trx=0,ts=0,ss=0) CHANNEL ACTIVATE ACK<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=0,ss=0) state ACTIVATION REQUESTED -> ACTIVE<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:806 (bts=0,trx=0,ts=0,ss=0) RF Channel Release CMD due error 1<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:718 (bts=0,trx=0,ts=0,ss=0) DEACTivate SACCH CMD<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=0,ss=0) state ACTIVE -> RELEASE DUE ERROR<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:863 (bts=0,trx=0,ts=0,ss=0) RF CHANNEL RELEASE ACK<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:767 (bts=0,trx=0,ts=0,ss=0) is back in operation.<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=0,ss=0) state RELEASE DUE ERROR -> NONE<o:p></o:p></p>
<p class="MsoNormal"><0000> chan_alloc.c:342 (bts=0,trx=0,ts=0,pchan=CCCH+SDCCH4) Allocating lchan=0 as SDCCH<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1727 (bts=0,trx=0,ts=0,ss=0) Activating ARFCN(990) SS(0) lctype SDCCH r=LOCATION_UPDATE ra=0x0b ta=0<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:536 (bts=0,trx=0,ts=0,pchan=CCCH+SDCCH4) Tx RSL Channel Activate with act_type=INITIAL<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=0,ss=0) state NONE -> ACTIVATION REQUESTED<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1456 (bts=0,trx=0,ts=0,ss=0) CHANNEL ACTIVATE ACK<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=0,ss=0) state ACTIVATION REQUESTED -> ACTIVE<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:806 (bts=0,trx=0,ts=0,ss=0) RF Channel Release CMD due error 1<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:718 (bts=0,trx=0,ts=0,ss=0) DEACTivate SACCH CMD<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=0,ss=0) state ACTIVE -> RELEASE DUE ERROR<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:863 (bts=0,trx=0,ts=0,ss=0) RF CHANNEL RELEASE ACK<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:767 (bts=0,trx=0,ts=0,ss=0) is back in operation.<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=0,ss=0) state RELEASE DUE ERROR -> NONE<o:p></o:p></p>
<p class="MsoNormal"><0000> chan_alloc.c:342 (bts=0,trx=0,ts=2,pchan=TCH/F) Allocating lchan=0 as TCH_F<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1727 (bts=0,trx=0,ts=2,ss=0) Activating ARFCN(990) SS(0) lctype TCH_F r=OTHER ra=0xe7 ta=0<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:536 (bts=0,trx=0,ts=2,pchan=TCH/F) Tx RSL Channel Activate with act_type=INITIAL<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=2,ss=0) state NONE -> ACTIVATION REQUESTED<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1456 (bts=0,trx=0,ts=2,ss=0) CHANNEL ACTIVATE ACK<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=2,ss=0) state ACTIVATION REQUESTED -> ACTIVE<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:806 (bts=0,trx=0,ts=2,ss=0) RF Channel Release CMD due error 1<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:718 (bts=0,trx=0,ts=2,ss=0) DEACTivate SACCH CMD<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=2,ss=0) state ACTIVE -> RELEASE DUE ERROR<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:863 (bts=0,trx=0,ts=2,ss=0) RF CHANNEL RELEASE ACK<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:767 (bts=0,trx=0,ts=2,ss=0) is back in operation.<o:p></o:p></p>
<p class="MsoNormal"><0004> abis_rsl.c:1127 (bts=0,trx=0,ts=2,ss=0) state RELEASE DUE ERROR -> NONE<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal">Note : We are using internal clock of osmo-trx no external Clock is connected.<o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal">Thanks and Regards,<o:p></o:p></p>
<p class="MsoNormal">Mrinal<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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