Project

General

Profile

Bug #5571

Updated by keith 4 months ago

Sometimes, after starting osmo-bsc, The BTS will transmit, we even start to get Channel requests, but this is the status:  
 <pre> 
 OsmoBSC# show trx                                                                                                                                                                      
 TRX 0 of BTS 0 is on ARFCN 251 
   RF Nominal Power: 37 dBm, reduced by 0 dB, resulting BS power: 37 dBm 
   Radio Carrier NM State: Oper 'NULL', Admin 'Unlocked', Avail 'Power off' 
   RSL State: connected 
   Baseband Transceiver NM State: Oper 'NULL', Admin 'Locked', Avail 'Power off' 
   E1 Signalling Link: 
     E1 Line 0, Type e1d: Timeslot 1, Mode RSL 
     E1 TEI 0, SAPI 0 

 </pre> 

 and of course we get such as this: 

 <pre> 
 DRSL NOTICE <0003> abis_rsl.c:2193 (bts=0) CHAN RQD[Location updating]: no resources for SDCCH 0x4, retrying with TCH_F 
 DRLL DEBUG <0000> lchan_select.c:299 (bts=0) lchan_select_by_type(TCH_F) 
 DRLL DEBUG <0000> lchan_select.c:233 (bts=0) lchan_avail_by_type(TCH_F) 
 DRLL DEBUG <0000> lchan_select.c:65 looking for lchan TCH/F: (bts=0,trx=0) trx not usable 
 DRLL DEBUG <0000> lchan_select.c:65 looking for lchan TCH/F_PDCH as TCH/F without pchan switch: (bts=0,trx=0) trx not usable 
 DRLL DEBUG <0000> lchan_select.c:65 looking for lchan TCH/F_PDCH as TCH/F: (bts=0,trx=0) trx not usable 
 DRLL DEBUG <0000> lchan_select.c:65 looking for lchan TCH/F_TCH/H_SDCCH8_PDCH as TCH/F without pchan switch: (bts=0,trx=0) trx not usable 
 DRLL DEBUG <0000> lchan_select.c:65 looking for lchan TCH/F_TCH/H_SDCCH8_PDCH as TCH/F: (bts=0,trx=0) trx not usable 
 DRLL NOTICE <0000> lchan_select.c:305 (bts=0) Failed to select TCH_F channel 

 </pre> 

 Stopping and restarting osmo-bsc will sooner ( or later :-/ ) get the TRX up.... 


 Attached is osmo-bsc.log of the bring-up and pcap of same.  

 I suspect there is something happening in a certain order sometimes that causes this?

Back

Add picture from clipboard (Maximum size: 48.8 MB)