> I know people who attempt to cope with that by using the R-URI of the > initial INVITE to attempt an in-dialog request if they haven't yet > received a Contact. (Seems to be grasping at straws if you ask me, but I > suppose its better than nothing.)
Contact was optional within rfc2543. Thus you are likely seeing vendors assume they are interacting with an rfc2543 device. If I recall correctly, using request-uri towards called is per rfc2543 when no Contact supplied within dialogs INVITE 101-299. If I recall correctly, using To towards caller is per rfc2543 when no Contact supplied within INVITE. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
