sysmoBTS + NITB

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Roelf Diedericks rodent at rodent.za.net
Tue Jul 9 20:47:04 UTC 2013


I have FINALLY gotten to play with my sysmoBTS acquired many months ago,
and updated to the latest packages using okpg, and am running a NITB.

GSM850 test setup in open mode A5/0, and I can SMS and call between devices.

However, there is no audio, and BTS console logs reports many repeats of
the following during an established call.

<0006> tch.c:601 (bts=0,trx=0,ts=7,ss=0) Rx Payload Type EFR is unsupported
<0006> tch.c:601 (bts=0,trx=0,ts=7,ss=0) Rx Payload Type EFR is unsupported
<0006> tch.c:601 (bts=0,trx=0,ts=7,ss=0) Rx Payload Type EFR is unsupported



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