Hi Arif, ACK for 2xx is a kind of "pseudo" transaction: it does get a new branch parameter in Via but does not follow any of the state machines (since there is no response to ACK). A proxy server would only receive ACK to 2xx if it added a Record-Route header, it will always forward it statelessly
Regards, Jeroen Arif wrote: > Hi! > just wanted to know.. > In case of INVITE if the response is 200 OK then the ACK is > considered as NOT part of this transaction and only in case of > NON-200 response its part of INVITE Transaction. Does this mean the > ACK is sent as a different transaction. IF SO then does it follow the > Non-Invite Transaction finite state machine as specified in 3261? > > what would be the behaviour of a proxy server in case its treated as > a new transaction. > > any ideas? > > > > --------------------------------- > Everyone is raving about the all-new Yahoo! Mail. > _______________________________________________ > 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
