[Spce-user] Transcode Audio Codec and preferred vocoder list

[Daniel Grotti]

Hi,
SPCE does not do any transcoding so the codecs are negotiated and to end during the SIP signalling.

Daniel

On Sep 9, 2015 7:57 AM, Raúl Alexis Betancor Santana <rabs at dimension-virtual.com> wrote:
>
> Thats because SCPE doesn't touch the RTP at all ... it only proxy it if needed, but don't do any transcoding.
>
> If you whant transcoding or more advanced RTP tricks ... you should play with the SEMS part of SPCE.
>
> ________________________________
>>
>> De: "Matthias Hohl" <matthias.hohl at telematica.at>
>> Para: "Spce-user at lists.sipwise.com" <spce-user at lists.sipwise.com>
>> Enviados: Miércoles, 9 de Septiembre 2015 2:24:29
>> Asunto: [Spce-user] Transcode Audio Codec and preferred vocoder list
>>
>> Hello,
>>
>> i want to force HD Audio (like G.722) on my SPCE for calls on subscriber site, so I told some test subscribers to force G.722 on clientsite.
>> That works well, but I regonized, that if a peering just support G.711, the subscriber can't phone outside or can recieve a call.
>>
>> I get: NAT-Reply - S=488 - Not acceptable here
>>
>> So it seams that the SPCE don't transcode the audio to the right codec. 
>>
>> 1.) Is there an option that the SPCE Transcode the G.711 Audio to G.722 Audio and vica verse?
>> 2.) If the subscriber and the peerings support booth Codecs, which codec will be taken? Is there a internal preferred Vocoder list with a ranking, which vocoder is preferred over another?
>>
>>
>> Thanks for you help.
>>
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