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
On Tue, Jul 09, 2013 at 10:47:04PM +0200, Roelf Diedericks wrote:
Hi,
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.
great!
From the code @ https://github.com/osmocom/osmo-bts/blob/master/src/osmo-bts-sysmo/tch.c line:583 I deduct that
" #if defined(L1_HAS_EFR) && defined(USE_L1_RTP_MODE) "
yes, the cruelpit is here:
http://git.osmocom.org/osmo-bts/tree/src/osmo-bts-sysmo/femtobts.h#n35
The question is what "some bugs" mean. I can't tell you and it has not been a priority to figure that out. The original author doesn't remember either. :}
I'd have expected that EFR is fully supported?
the DSP fully supports it and in general it should work. We use AMR most of the time so debugging this has not been a priority.
In the osmo-nitb.cfg you can add the following for now (or do that through the vty configuration):
mncc-int default-codec tch-f fr
holger
Many thanks Holger!
That did the trick.
Regards, Roelf.
On Wed, Jul 10, 2013 at 4:28 PM, Holger Hans Peter Freyther < holger@freyther.de> wrote:
On Tue, Jul 09, 2013 at 10:47:04PM +0200, Roelf Diedericks wrote:
Hi,
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.
great!
From the code @ https://github.com/osmocom/osmo-bts/blob/master/src/osmo-bts-sysmo/tch.c line:583 I deduct that
" #if defined(L1_HAS_EFR) && defined(USE_L1_RTP_MODE) "
yes, the cruelpit is here:
http://git.osmocom.org/osmo-bts/tree/src/osmo-bts-sysmo/femtobts.h#n35
The question is what "some bugs" mean. I can't tell you and it has not been a priority to figure that out. The original author doesn't remember either. :}
I'd have expected that EFR is fully supported?
the DSP fully supports it and in general it should work. We use AMR most of the time so debugging this has not been a priority.
In the osmo-nitb.cfg you can add the following for now (or do that through the vty configuration):
mncc-int default-codec tch-f fr
holger
-
Holger Hans Peter Freyther -
Roelf Diedericks