[Freeswitch-users] How to avoid transcoding?

[António Silva]

Hi,

to understand how codec negotiation work check 
https://freeswitch.org/confluence/display/FREESWITCH/Codec+Negotiation

Also, you may want to enable inherit_codec parameter this way the codec 
negotiated in bleg is first match against codecs from aleg.


Also, another simple way to avoid transcoding is set only one codec in 
the configuration, set:

<X-PRE-PROCESS cmd="set" data="global_codec_prefs=PCMU"/>


On 07/11/2018 13:55, Ulrich Backes wrote:
>
> Hi guys,
>
> I've investigated many hours and cannot solve this problem:
> A and B should use g711u.
>
>
> A:
>
>
> B:
>
> But FreeSwitch decides to transcode:
>
>
> The settings:
> vars.xml
> <X-PRE-PROCESS cmd="set" data="media_mix_inbound_outbound_codecs=false"/>
> <X-PRE-PROCESS cmd="set" 
> data="global_codec_prefs=OPUS,G722,PCMU,PCMA,VP8"/>
>
> internal.xml
> <param name="inbound-codec-negotiation" value="greedy"/>
> <param name="inbound-late-negotiation" value="true"/>
> <param name="disable-transcoding" value="true"/>
>
> <param name="inbound-proxy-media" value="false"/>
> <param name="inbound-bypass-media" value="false"/>
> <param name="inbound-codec-prefs" value="$${global_codec_prefs}"/>
> <param name="outbound-codec-prefs" value="$${global_codec_prefs}"/>
>
> default.xml (Using the demo-Dialplan)
> <extension name="Local_Extension">
> ...
>
> Using FS v 1.8
>
> Thanks.
> Uli
>
>
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-- 
Saludos / Regards / Cumprimentos
António Silva

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