Unless I'm not wrong here 200OK and ACK can pariticipate in a negotiaton, then you simply can't deduct if it's an offer or an answer by just looking at one message, you have to keep track of it. But again, it's all in the RFC....
/John Aronsson -----Ursprungligt meddelande----- Från: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] För Mohamed Moideen. T.E Skickat: den 10 januari 2008 07:35 Till: [email protected] Ämne: [Sip-implementors] How UAC can Identify 2xx for INVITE contains an Offer or Answer? Hi all, Scenario is below, UAC is sending an INVITE with Content-Disposition Header with value session and handling parameter 'optional' and with Content-language header also. At UAS, if the language specified in Content-language is not supported and also handling parameter of Content-Disposition is 'optional', it won't consider the messaged body in INVITE as an offer and it will include the initial offer in the first 2xx response. If UAS supports the language then it will send the answer in first 2xx response. How UAC will identify whether the message body in 2xx reponse is an answer or an initial offer? _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
