BS-11 link does not come up

This is merely a historical archive of years 2008-2021, before the migration to mailman3.

A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/OpenBSC@lists.osmocom.org/.

Sergey V. Efimoff risky at mail.ru
Thu Aug 20 18:02:49 UTC 2009


Hello All,

When trying to run bsc_hack I get the following messages:

bootstrapping OML for BTS 0
<0020> abis_nm.c:1644 Set BTS Attr (bts=0)
<0020> abis_nm.c:1661 Set TRX Attr (bts=0,trx=0)
<0020> abis_nm.c:1754 Set Chan Attr (bts=0,trx=0,ts=0)
<0020> abis_nm.c:1754 Set Chan Attr (bts=0,trx=0,ts=1)
<0020> abis_nm.c:1624 CONNECT TERR TRAF Um=(bts=0,trx=0,ts=1) E1=(0,2,1)
<0020> abis_nm.c:1754 Set Chan Attr (bts=0,trx=0,ts=2)
<0020> abis_nm.c:1624 CONNECT TERR TRAF Um=(bts=0,trx=0,ts=2) E1=(0,2,2)
<0020> abis_nm.c:1754 Set Chan Attr (bts=0,trx=0,ts=3)
<0020> abis_nm.c:1624 CONNECT TERR TRAF Um=(bts=0,trx=0,ts=3) E1=(0,2,3)
<0020> abis_nm.c:1754 Set Chan Attr (bts=0,trx=0,ts=4)
<0020> abis_nm.c:1624 CONNECT TERR TRAF Um=(bts=0,trx=0,ts=4) E1=(0,3,0)
<0020> abis_nm.c:1754 Set Chan Attr (bts=0,trx=0,ts=5)
<0020> abis_nm.c:1624 CONNECT TERR TRAF Um=(bts=0,trx=0,ts=5) E1=(0,3,1)
<0020> abis_nm.c:1754 Set Chan Attr (bts=0,trx=0,ts=6)
<0020> abis_nm.c:1624 CONNECT TERR TRAF Um=(bts=0,trx=0,ts=6) E1=(0,3,2)
<0020> abis_nm.c:1754 Set Chan Attr (bts=0,trx=0,ts=7)
<0020> abis_nm.c:1624 CONNECT TERR TRAF Um=(bts=0,trx=0,ts=7) E1=(0,3,3)
bootstrapping RSL for BTS/TRX (0/0) using MCC=1 MNC=1 BSIC=1 TSC=7
<0020> abis_nm.c:805 OC=SIEMENSHW(a5) INST=(03,00,00) STATE CHG:
<0020> abis_nm.c:805 OC=SIEMENSHW(a5) INST=(03,00,00) Failure Event  
Report Severity=indeterminate failure
<0020> abis_nm.c:805 OC=SIEMENSHW(a5) INST=(03,00,00) STATE CHG:

Debug with -dDMI:DRSL:DNM shows strange lines:

...
<1000> input/misdn.c:132 DL_INFORMATION_IND: use channel(0) sapi(63)  
tei(127) for now
mISDN message for unknown sign_link
...
<1000> input/misdn.c:132 DL_INFORMATION_IND: use channel(2) sapi(62)  
tei(1) for now
mISDN message for unknown sign_link
...


Why TEI=1 or TEI=127 while it should be 25?

Also, dmesg produces:

...
mISDN_send: error -12
...

I've reviewed mailing list for similiar problems description and found  
that several people have already seen
these problems, but didn't find the solution.

I thought that these problems may be connected with internal BS11  
oscillator calibration, so
I've performed calibration as described in wiki (though I used Nateks  
SDH mux with Stratum oscillator
as E1 clock source instead of HFC-S ISDN card, which I don't have).  
Calibration was successful, but
it didn't help. Here is query output while running bsc_hack:

...
LMT LOGON: ACK

PHASE: 3 Normal               MBCCU0: Load        MBCCU1: No Load      
Abis-link: Up

BS11 ATTRIBUTES:
	BS-11 ESN PCB Serial Number: 001132
	BS-11 ESN Hardware Code Number: 135-2044/03.03
	BS-11 ESN Firmware Code Number: 135-2044/03.03
	E1 Channel: Port=255 Timeslot=161 Subslot=39
	PLL Set Value=1024, Work Value=1023

SITE MANAGER ATTRIBUTES:
	E1 Channel: Port=0 Timeslot=1 (Full Slot)
	TEI: 25

BS11 Line Interface ATTRIBUTES:
	PLL Mode: Standalone

BS11 CCLK ATTRIBUTES:
	CCLK Accuracy: Medium (0)

BS11 Power Amplifier 0 ATTRIBUTES:
	TRX Power: 30mW (GSM)
LMT LOGOFF: ACK
...

It seems that everything should be ok, but... there is no success.

Best regards,
Sergey.








More information about the OpenBSC mailing list