> <-------------------UPDATE-------------------- > > (Session-Expires:3600;refresher=none)
The header is malformed. The valid refresher values are indicated within RFC 4028 section 4. > [Query]: What should be the value of session refresher in 200 OK of INVITE? The refresher should be "uac". RFC 4028 section 9: "as the table indicates, the UAS cannot override the UAC's choice of refresher". As indicated within RFC 4028 section 7.4, it is okay for the refresher roles to change. Within your example, the caller originally preferred to be refresher; then it preferred called to be refresher; then the RFC required the called to switch refresher back to the caller's original preference. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors