[Serusers] SIP Transaction and avpops

[Marian Dumitru]

Hello Minh,

There will be two different transaction on SER1 (for INVITE 
bob at example.com and INVITE bob at 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. All 
> the two are responsible for the domain example.com. Ser-1 is for 
> outgoing calls and Ser-2 is for incoming calls.
> 
>      Alice at example.com wants to call Bob at example.com, so she sends an 
> INVITE bob at 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 at 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 2 
> INVITEs (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


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