> > > I prefer to just ask two simple questions: > > > > > > a) Is this feature implemented and used by some *real* SIP device? > > > > Yes. > > Any example?
The following is a non service example. B2BUA aware of Session-Expires activated upon early dialog by UPDATE. B2BUA does not receive refresh in time; it sends BYE towards called party for 1 of multiple early dialogs for branch. > since RFC3261 is not strict about the need of Contact and RR headers > in 1XX responses, we cannot expect sending an in-dialog request (BYE) > during an early-dialog to work. If I recall correctly (sorry no time dig up references), RFC 3261 is strict about adding Contact although it may be hidden within the text. The To tag is required to form a dialog; Contact is required to be included within dialog forming responses. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
