[Freeswitch-users] absolute_codec_string question

[Nicolas Brenner]

Hi,

I'm trying to force the use of a specific codec when originating a call from
the command line.

This is my codecs config in vars.xml:

  <X-PRE-PROCESS cmd="set" data="global_codec_prefs=PCMU,PCMA,SPEEX,G729"/>
  <X-PRE-PROCESS cmd="set"
data="outbound_codec_prefs=PCMU,PCMA,SPEEX,G729"/>


If I just originate a call:

originate {ignore_early_media}sofia/gateway/mygateway/444444
&bridge(user/1001)

I get the following SDP:

   v=0
   o=FreeSWITCH 1303727406 1303727407 IN IP4 127.0.0.1
   s=FreeSWITCH
   c=IN IP4 127.0.0.1
   t=0 0
   m=audio 17054 RTP/AVP 0 8 98 18 101 13
   a=rtpmap:98 SPEEX/8000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=ptime:20


If I originate a call with the absolute_codec_string variable set like this:

originate
{ignore_early_media,absolute_codec_string='G729,PCMU'}sofia/gateway/
mygateway/444444 &bridge(user/1001)

I get the following SDP:

   v=0
   o=FreeSWITCH 1303719860 1303719861 IN IP4 127.0.0.1
   s=FreeSWITCH
   c=IN IP4 127.0.0.1
   t=0 0
   m=audio 24894 RTP/AVP 0 101 13
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=ptime:20


And it doesn't matter the value I give to the absolute_codec_string, I will
get the same SDP, except if I specify SPEEX, then I'll get the same SDP as
the one above. Am I missing something, or is this the way it's supposed to
work?

I also tried with the codec_string variable, and I get the same results.

I'm using the following version from the git repository: head-git-244fd68
2011-03-21 14-27-57 -0400


Thanks for your help,


Nicolas
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