Bug #5571
Updated by keith almost 2 years 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?
