Hi Vishal, There is nothing wrong in the SDP you have specified. Perhaps problem is with the end point, which is treating m-line as mandatory parameter in the SDP. So media negotiation fails and results in failure.
refer to the following draft for Offer-Answer Examples http://www.iptel.org/info/players/ietf/callflows/draft-johnston-mmusic-offer-answer-examples-01.txt Rgds, Amar The greatest enemy of best is "good." If you're willing to accept "good" you'll never be the "Best." "Agrawal, Vishal" <[EMAIL PROTECTED] om.com> To Sent by: "Sip-Implementors" sip-implementors- <[email protected]> [EMAIL PROTECTED] cc ia.edu Subject [Sip-implementors] RFC 3725 01/28/2006 03:46 Question - Call Flow IV AM Hello, What SDP lines are MUST in the "no media" SDP sent in the offer 1 in the call flow IV in the RFC 3725? What contact address should be used in the "c" line? Can someone provide an example "no media" SDP? All SIP phones (at least 4 vendors) reject the following "no media" SDP in my INVITE (The same works if followed by valid "m=" line(s)) to the phones... v=0 o=test 1 1 IN IP4 10.2.12.10 s=- c=IN IP4 10.2.12.10 t=0 0 Thanks, Vishal _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors *********************** FSS-Unclassified *********************** _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
