Half sided calls

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Sipos Csaba sipos.csaba at kvk.uni-obuda.hu
Sat Sep 19 14:05:33 UTC 2015


Dear List,

I am in the process of creating the Wiki page for Ettus B200/B210 with OpenBSC, GPRS and Asterisk.

I am quite close, both data and calls are working, but the voice calls are half sided. The downlink direction works, but the uplink does not.

I tried without Asterisk and LCR (between two phones) and still the calls are half sided.

In the mean time I got these messages in the Osmo-BTS log:

<0006> scheduler.c:276 PH-DATA.req: chan_nr=0x0a link_id=0x00 fn=1284768 ts=2 tr                                                                             x=0
<0006> scheduler.c:1036 TCH/F has not been served !! No prim for trx=0 ts=1 at f                                                                             n=1284764 to transmit.
<0006> scheduler.c:1036 TCH/F has not been served !! No prim for trx=0 ts=2 at f                                                                             n=1284764 to transmit.
<0006> scheduler.c:379 TCH RTS.ind: chan=TCH/F chan_nr=0x09 fn=1284772 ts=1 trx=                                                                             0
<0006> scheduler.c:276 PH-DATA.req: chan_nr=0x09 link_id=0x00 fn=1284772 ts=1 tr                                                                             x=0
<0006> scheduler.c:379 TCH RTS.ind: chan=TCH/F chan_nr=0x0a fn=1284772 ts=2 trx=                                                                             0
<0006> scheduler.c:276 PH-DATA.req: chan_nr=0x0a link_id=0x00 fn=1284772 ts=2 tr                                                                             x=0
<0006> scheduler.c:1036 TCH/F has not been served !! No prim for trx=0 ts=1 at f                                                                             n=1284768 to transmit.
<0006> scheduler.c:1036 TCH/F has not been served !! No prim for trx=0 ts=2 at f                                                                             n=1284768 to transmit.

SMS and GPRS seems to be fine.

If someone have any idea, I would love to hear it. :-)

Thanks!

Csaba



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