Quick question I was analyzing the SDP which my softswtich is sending in
response to an INVITE for an inbound call I received from my SIP peer. I
noticed that I can see two codec choices in media description (m=) line but the
rtpmap attribute of the SDP just showing one. Can any one tell what does it
means and which one has precedence if I have media description and rtpmap
present in an SDP?
c=IN IP4 5.5.5.2
t=0 0
m=audio 21092 RTP/AVP 18 0 100
a=rtpmap:18 G729/8000
a=rtpmap:100 telephone-event/8000
a=fmtp:100 0-11
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