> Is it must to send 'timer' tag extension in Supported: header > if Session-Expire: 60;refresher=uac/uas header is present in > a request?
Adding supported timer is required if including refresher=uac. Adding supported timer is not required if included no refresher or included refresher=uas. This simulates a proxy interaction. > What should be the behaviour if UAS receives a message including > the header "Session-Expire: 600;refresher=uac" but excluding the > header "Supported:timer"? It is abnormal behavior (as indicated within RFC 4028 Table 2); thus it can basically act however it desires (assuming RFC 4028 doesn't explicitly define how to handle the abnormal situation). _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
