[Freeswitch-users] rtpmap question PCMU/PCMA

[Mark Campbell-Smith]

Thanks Brian.  I didnt think it was mandatory.  As my client is not
accepting this sdp format, can I change it?

I've tried with
<action application="export" data="codec_string=PCMA,PCMU"/>
and
<action application="export" data="absolute_codec_string=PCMA,PCMU"/>
and
            <action application="export"
data="sip_append_audio_sdp=a=rtpmap:8 PCMA/8000"/>
            <action application="export"
data="sip_append_audio_sdp=a=rtpmap:0 PCMU/8000"/>

and have late negotiation active, but nothing is changed in the SDP.

Basically I want change
   v=0
   o=Sippy 142967340 3687727620696226321 IN IP4 80.232.37.178
   s=-
   t=0 0
   m=audio 36824 RTP/AVP 8 0 18 101
   c=IN IP4 213.50.91.3
   a=fmtp:18 annexb=yes
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=sqn: 0
   a=cdsc: 1 audio RTP/AVP  8
   a=cdsc: 2 image udptl t38
   a=cpar: a=T38FaxUdpEC:t38UDPRedundancy
   a=cpar: a=T38FaxVersion:0
   a=cpar: a=T38MaxBitRate:14400

to something like:
   v=0
   o=Sippy 142967340 3687727620696226321 IN IP4 80.232.37.178
   s=-
   t=0 0
   m=audio 36824 RTP/AVP 8 0 18 101
   c=IN IP4 213.50.91.3
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=rtpmap:8 PCMA/8000
   a=rtpmap:0 PCMU/8000

Is there an 'easy' way to do this?
Thanks


On Wed, Jun 2, 2010 at 4:21 PM, Brian West <brian at freeswitch.org> wrote:
> No it is NOT mandatory to include them.  Only when they are on defined codec numbers.
>
> /b
>
> On Jun 2, 2010, at 9:14 AM, Mark Campbell-Smith wrote:
>
>> Coming back to my original question:
>> Is it mandatory to always include the rtpmap details for PCMU/PCMA
>> codes?  For example something like 'a=rtpmap:8 PCMA/8000' and
>> 'a=rtpmap:0 PCMU/8000'?
>>
>> Is it possible to add the end of the SDP parameters by doing something like:
>>         <extension name="fix_phonzo" continue="true">
>>                  <condition field="caller_id_number" expression="123456">
>>                      <action application="export"
>> data="sip_append_audio_sdp=a=rtpmap:8 PCMA/8000"/>
>>                     <action application="export"
>> data="sip_append_audio_sdp=a=rtpmap:0 PCMU/8000"/>
>>                  </condition>
>>            </extension>
>>
>> Can this be done anywhere in the dialplan as long as its before the
>> bridge command?
>
>
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