I've got a question about RFC 3261 and ACK/Cseq. > RFC says : > 17.1.1.3 Construction of the ACK Request > > This section specifies the construction of ACK requests sent within > the client transaction. A UAC core that generates an ACK for 2xx > MUST instead follow the rules described in Section 13. > > The ACK request constructed by the client transaction MUST contain > values for the Call-ID, From, and Request-URI that are equal to the > values of those header fields in the request passed to the transport > by the client transaction (call this the "original request"). The To > header field in the ACK MUST equal the To header field in the > response being acknowledged, and therefore will usually differ from > the To header field in the original request by the addition of the > tag parameter. The ACK MUST contain a single Via header field, and > this MUST be equal to the top Via header field of the original > request. The CSeq header field in the ACK MUST contain the same > value for the sequence number as was present in the original request, > but the method parameter MUST be equal to "ACK". > > > Question : why the method parameter in Csqeq must be equal to ACK ? What is > the aim of this rule ? > Thank you for your response. > > Emmanuel
________________________________________ Emmanuel CHEVRIER Development - 6500 Core Network - Telephony EADS TELECOM Phone: + 33 1 30 47 63 54 Fax: + 33 1 30 47 63 09 [EMAIL PROTECTED] www.eads-telecom.com _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
