[Freeswitch-users] How to avoid transcoding?

[Ulrich Backes]

Hi all,

I just want to inform you about the solution of my problem: The principal
point: I had to remove the ringback (local_extension in dialplan). Thank's
for the advise and thanks for all other advise because I could learn from
it. Thank you very much.

Kind regards
Uli


-----Ursprüngliche Nachricht-----
Von: Sebastian Kemper <sebastian_ml at gmx.net> 
Gesendet: Mittwoch, 7. November 2018 19:27
An: FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
Betreff: Re: [Freeswitch-users] How to avoid transcoding?

On Wed, Nov 07, 2018 at 01:55:57PM +0100, Ulrich Backes wrote:
> 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

Hello Uli,

FS (.111) starts generating ringback and decides to use G722 on A leg.
So remove the ringback for starters.

Also, I'd leave "inbound-codec-negotiation" at default.
"disable-transcoding" should also not be set, as this is for early
negotiation, not late, IIRC. Probably it does nothing when late negotiation
is used, but better just remove it.

You also need

<action application="set" data="inherit_codec=true"/>

in your dialplan.

This is all written down here:
https://freeswitch.org/confluence/display/FREESWITCH/Codec+Negotiation

Kind regards,
Seb




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