Specifying channel mode for speech

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Thomas Cooper tacooper at vt.edu
Wed Feb 29 15:42:16 UTC 2012


Thank you for the quick and helpful replies, Andreas and Holger! I had
a feeling there was an easy answer.

-Tom

> Message: 6
> Date: Wed, 29 Feb 2012 08:21:13 +0100
> From: jolly <andreas at eversberg.eu>
> To: Thomas Cooper <tacooper at vt.edu>
> Cc: openbsc at lists.osmocom.org
> Subject: Re: Specifying channel mode for speech
> Message-ID: <4F4DD1E9.8080409 at eversberg.eu>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Thomas Cooper wrote:
>> Osmo-bts gets the MODE_MODIFY_REQ from OpenBSC with
>> GSM48_CMODE_SPEECH_EFR to use for the channel mode. However, I would
>> like to be able to specify using GSM48_CMODE_SPEECH_V1 instead (which
>> is FR; EFR is not supported in L1). Is there an easy way to set the
>> preferred channel mode/audio support? I didn't see anything on the VTY
>> wiki or in the config file.
>>
> hi tom,
>
> you may change the line 46 at mncc_builtin.c. the first entry in this
> array is the full rate code, the second entry is the half rate codec.
> (depending on the trx configuration)  just change the first entry to
> GSM48_CMODE_SPEECH_V1.
>
> regards,
>
> andreas
>
> ------------------------------
>
> Message: 8
> Date: Wed, 29 Feb 2012 09:54:24 +0100
> From: Holger Hans Peter Freyther <holger at freyther.de>
> To: openbsc at lists.osmocom.org
> Subject: Re: Specifying channel mode for speech
> Message-ID: <4F4DE7C0.5000000 at freyther.de>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On 02/29/2012 08:21 AM, jolly wrote:
>
>> you may change the line 46 at mncc_builtin.c. the first entry in this
>> array is the full rate code, the second entry is the half rate codec.
>> (depending on the trx configuration)  just change the first entry to
>> GSM48_CMODE_SPEECH_V1.
>
> you can change this with the VTY config. Look at commit
> ab386e6120559ef2deb6a27f4455539cba920c9d that introduced it.
>
> holger
>




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