Compiling LCR for OpenBSC

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Nik Pakar nikpakar at gmail.com
Thu Mar 8 10:18:46 UTC 2012


Thank you very andreas, for the help and nice integration work.

Im going to try this branch now.

Is it only this patch to be applied to the rtp_proxy.c for the git clone i
have from openbsc ?

http://cgit.osmocom.org/cgit/openbsc/commit/?h=jolly/rtpmux


On Thu, Mar 8, 2012 at 8:09 AM, jolly <andreas at eversberg.eu> wrote:

> hi nik,
>
> since lcr uses alaw (optionally ulaw) internally, it transcodes the
> audio between alaw and gsm full rate.
>
> alternatively you can bridge rtp directly between freeswitch and
> openbsc, if you use the "bridge <interface>" feature at interface.conf.
> additionally you need to add a line "rtp-bridge" to your interface
> definition. this rtp-bridge feature only works with the bridge feature,
> since lcr will not be able to handle audio streams then. since it is
> still developed, you need to use the "jolly/rtpmux" branch of openbsc.
> then it will only offer the codec to freeswitch which the phone
> supports. on the other direction, lcr selects the commonly supported
> codec. if more codecs are supported, the upper most (prefered) is used.
>
> anyway it should work in both cases. (with and  without rtp-bridge feature)
>
> regards,
>
> andreas
>
>
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