OpenBSC + USSD Application

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Alexander Chemeris alexander.chemeris at gmail.com
Sun Aug 25 07:21:00 UTC 2013


On Sun, Aug 25, 2013 at 12:51 AM, Lennart Müller
<mueller.lennart at googlemail.com> wrote:
> 2013/8/24 Alexander Chemeris <alexander.chemeris at gmail.com>
>>
>> Your log doesn't show any user activity, so you either (1) haven't
>> enabled enough logging or (2) your phone is not attached to the
>> OsmoNITB network.
>
>
> <0004> abis_rsl.c:1438 (bts=0,trx=0,ts=0,ss=0) Activating ARFCN(869) SS(0)
> lctype SDCCH r=OTHER ra=0x13 ta=1
> <0004> abis_rsl.c:1166 (bts=0,trx=0,ts=0,ss=0) CHANNEL ACTIVATE ACK
> <0000> abis_rsl.c:1628 (bts=0,trx=0,ts=0,ss=0) SAPI=0 ESTABLISH INDICATION
> <0002> gsm_04_08.c:910 <- CM SERVICE REQUEST serv_type=0x08 mi_type=0x04
> M(1622723192)
> <0002> gsm_04_08.c:832 -> CM SERVICE ACK
> <0001> gsm_04_08.c:142 (bts 0 trx 0 ts 0 pd 05) Sending 0x21 to MS.
> <0000> abis_rsl.c:1628 (bts=0,trx=0,ts=0,ss=0) SAPI=0 DATA INDICATION
> <0003> bsc_api.c:498 CLASSMARK CHANGE CM2(len=3) CM3(len=5)
> <0000> abis_rsl.c:1628 (bts=0,trx=0,ts=0,ss=0) SAPI=0 DATA INDICATION
> <0002> ussd.c:58 USSD: Own number requested
> <0000> chan_alloc.c:406 (bts=0,trx=0,ts=0,ss=0) starting release sequence
> <0003> gsm_04_08_utils.c:231 Sending Channel Release: Chan: Number: 0 Type:
> 1
> <0004> abis_rsl.c:634 (bts=0,trx=0,ts=0,ss=0) DEACTivate SACCH CMD
>
> I call that an USSD request.

Hum, indeed, this is a correct USSD request/response. Maicon wrote
"log messages right before I call", so I was looking at the end of the
log, which looks like a startup sequence of a BTS.

-- 
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru




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