2011/7/27 Brett Tate <[email protected]>: > Concerning the lack of Contact within a dialog created by an INVITE 18x with > To tag, it means that the UAS is non compliant to RFC 3261.
I don't agree. RFC 3261 states that Contact MUST be present in *reliable* responses (not final I mean), and RFC 3261 just defines 2XX as reliable. 180/183 are not reliable so the don't require to contain Contact header. Just in case PRACK is used for 180/183 responses it's required that such responses contain Contact (and mirror Record-Route). -- Iñaki Baz Castillo <[email protected]> _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
