Hi, If A sends an INVITE to B, and B is going to respond with a non-2xx final response (such as 4xx, 5xx) to that INVITE. MUST B inserts the To tag in its response OR can it send the response without it ? If the response does not have the To tag in it, does it violate the RFC 3261 specification ?
Thanks, ACK _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
