Just to be clear in case you're new to SDP...<br><br>The m=audio line gives a list of codecs identified by by number. Many of them are static numbers meaning they are assigned to particular codecs. The list is at <a href="http://www.iana.org/assignments/rtp-parameters">http://www.iana.org/assignments/rtp-parameters</a> 0=PCMU 8=PCMA etc.<br>
<br>Anything in the 96-127 range is dynamic and identified by name on a a=rtpmap line.<br><br>For static numbers it's allowed to have a a=rtpmap line, but not required. But some devices are broken and require it anyway. verbose=sdp=true puts a=rtpmap for all codecs, which will work on all devices but at the risk of possibly exceeding the MTU.<br>
<br>-Steve<br><br><br><br><br><br><div class="gmail_quote">On 11 January 2011 22:54, Brian West <span dir="ltr"><<a href="mailto:brian@freeswitch.org">brian@freeswitch.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
You are making the wrong conclusion. The SDP is being verbose. That SDP is offering PCMA, PCMU, Speex on 98, GSM, DTMF on 101 and CN<br>
<br>
What you need to set is the variable verbose_sdp=true so that we do a complete filled out SDP because the device you're speaking to is being intellectually challenged. See the codec list in the m= line?<br>
<font color="#888888"><br>
/b<br>
</font><div class="im"><br>
On Jan 11, 2011, at 4:35 PM, Peter Steinbach wrote:<br>
<br>
> Hello,<br>
><br>
> when our Freeswitch sends an INVITE to a phone, it only offers speex<br>
> codec for voice:<br>
> m=audio 12068 RTP/SAVP 8 0 98 3 18 101 13<br>
> a=rtpmap:98 SPEEX/8000<br>
> a=rtpmap:101 telephone-event/8000<br>
> a=fmtp:101 0-16<br>
<br>
<br>
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