Hello Minh,
There will be two different transaction on SER1 (for INVITE bob@example.com and INVITE bob@somewhere.com) due different set of VIA headers in the two invites. You cannot make any connection between the two transactions. If you need to pass some information from transaction1 to transaction2, put it in the INVITE request.
Best regards, Marian
PHAN, Quang-Minh (Docteur Ordinateur) wrote:
Hi All,
I have the following scenario: There are 2 SER instants: Ser-1 and Ser-2 running on 2 machines. Allthe two are responsible for the domain example.com. Ser-1 is for outgoing calls and Ser-2 is for incoming calls.
Alice@example.com wants to call Bob@example.com, so she sends anINVITE bob@example.com to Ser-1. Ser-1 forwards the call to Ser-2. Ser-2 tries to locate Bob but Bob's softphone is not registered. Fortunately, example.com has implemented "call forwarding on unavailable" service and Bob is using this. He wants to forward all his calls to Bob@somewhere.com, so Ser-2 replaces the URI of the INVITE by bob.somewhere.com and forward the call back to Ser-1 (as Ser-1 is responsible for all outgoing calls).
My question is would it be possible that Ser-1 thinks that the 2INVITEs (INVITE bob.example.com and INVITE bob.somewhere.com) passing through it belong to the same transaction? (Because they have the same CALL-ID, Fromtag and Totag). If so, How can I do to make them become 2 different transactions?
Thank you very much for your help,
Minh