Thanks for prompt reply. Does it mean that in response to carrierÂ’s INVITE my Softswitch reply with (200 OK) both 729 and 711 as the Codec choices with 729 as preference and 711 sets as fall back?
Vikram Chhibber <[EMAIL PROTECTED]> wrote: This SDP seems to be correct. "rtpmap" is not mandatory for static payload types. Payload type 0 belongs in this range and corresponds to G.711 uLaw. Similar is the case for payload type 18 but not for 100 which is a dynamic payload type. On Tue, May 20, 2008 at 8:51 PM, Rashid Shakil wrote: > > 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 > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
