George AK wrote: > Hi, > > When UserA send INVITE which goes thru a B2BUA to UserB, should the B2BUA > puts its address in the Contact header field? >
Yes, the B2BUA must use its own address in the contact uri or succeeding requests within the dialog would not pass through the B2BUA. 3PCC is also another reason because the first leg call is originated by the B2BUA. Thus, the B2BUA doesn't have any choice but to present its own contact address. > In that case, UserA will see only B2BUA's Contact address in the 200 OK > response. How will UserA know, who actually answered the call? > The B2BUA MAY opt to NOT remove the via address sent by the callee in the 200 OK before appending its own via address. This can serve as a hint to the caller who actually answered the call. > > thanks in advance. > > rgds, > George > > > --------------------------------- > Looking for people who are YOUR TYPE? Find them here! > _______________________________________________ > 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
