RFC 3261 section 13.2.2.3 says 4xx, 5xx and 6xx responses may contain a Contact header field value indicating the location where additional information about the error can be found.
But table 2 indicates it is only legal in a 485 response. Header field where proxy ACK BYE CAN INV OPT REG ------------ ----- ----- --- --- --- --- --- --- Contact R o - - m o o Contact 1xx - - - o - - Contact 2xx - - - m o o Contact 3xx d - o - o o o Contact 485 - o - o o o The statement does not contain normative requirements language, but is inconsistent with the table. It seems that "Contact" should be replaced by "Error-Info" since it talks about getting additional info about the error which is exactly what the Error-Info is for. Is this a bug? cheers, (-:bob Robert F. Penfield Chief Software Architect Acme Packet, Inc. 71 Third Avenue Burlington, MA 01803 [EMAIL PROTECTED] _______________________________________________ Sip-implementors mailing list Sip-implementors@cs.columbia.edu http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors