[Asterisk-Dev] Re: Codec orders

[malz]

As I understand it, in a SIP channel the only codec order taken into account
is the one of the [general] section of sip.conf. The [entity] (peer sections
in sip.conf...) preferences seem to be regarded as orderless switches.

My understanding of the code is the following:
- codecs that may be used (orderless bitmap flags): determined from
[general], [entity], and SDP/SIP negociation
- the preference order is:
     * the one defined in [general]
     * or the one defined in "int ast_best_codec()" in channel.c

To answer you question, I think that there is no way to specify any codec
order on a per-peer basis neither in the config file, nor in the SDP
negociation. Please somebody correct me if I am wrong.

Marc.

----- Original Message ----- 
From: "James H. Cloos Jr." <cloos at jhcloos.com>
To: <asterisk-dev at lists.digium.com>
Sent: Monday, February 16, 2004 6:15 AM
Subject: [Asterisk-Dev] Re: Codec orders


> >>>>> "Olle" == Olle E Johansson <oej at edvina.net> writes:
>
> Olle> Is there something somewhere else in the code that keeps the
> Olle> order?
>
> I suspect the order is dependant on the complexity of the codecs,
> as returned by the show translation cli command.
>
> It would certainly explain the pref for gsm, as compressing to gsm is
> *substantially* faster than the other low bitrate codecs (except for
> adpcm), and decompressing is also quite fast.
>
> -JimC
>
> _______________________________________________
> Asterisk-Dev mailing list
> Asterisk-Dev at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-dev
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-dev