On Tue, Sep 13, 2011 at 6:28 PM, Michael Collins
<msc@freeswitch.org> wrote:
For the record, line #107 contains the codecs (and other stuff) that FS offered:
m=audio 16480 RTP/AVP 8 0 9 101 13
The "8 0 9 101 13" represent the codecs (and other stuff). What do those numbers mean? This wiki page has the list:
The SDP spec says that for non-dynamic payload numbers you are NOT required to have the "a=rtpmap" lines. This makes sense because those payload numbers don't change meaning until you get up to 96 and higher. The issue is that some devices are broken and require the "a=rtpmap" lines for the payload types below number 96. The verbose_sdp chan var mentioned by KK tells FS to add all those a=rtpmap lines for the non-dynamic payload types. You should only set this var when absolutely necessary because those verbose SDP's can cause the packets to be larger than the allowable MTU size.
Dontcha just *love* SIP/SDP interop? :)
-MC
I see a failed bridge to my second carrier. The sip_local_sdp_str doesn't show PCMU in it - did FS not offer any codecs?
Can someone tell me what's going on here?
-Avi
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