[OpenSIPS-Users] Question regarding append_branch

[Bogdan-Andrei Iancu]

Hi Agalya,

The append_branch() itself is not doing any SIP signaling. It is only 
creating (internally, as data structure) a new branch for the request 
(to a new destination).

The signalling (to all created branches) is done by TM module when you 
relay the request out. The forking is a transaction level mechanism and 
it is handled by the TM module.

Best regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 07.09.2016 16:56, Ramachandran, Agalya (Contractor) wrote:
>
> Hi team,
>
> When append_branch() is called, it takes care of the forking process.
>
> When we say it is used to fork the call, append_branch() takes care of 
> sending the request out to that branch and as well maintaining the 
> dialog and transaction information for that call leg or it is used 
> only to send SIP INVITE out?
>
> Sounds like a basic question. But I want to make sure how it works.
>
> Am assuming it takes care of dialog and transaction for that call leg 
> and it maps the response to that call leg as well. Correct me if am 
> wrong.
>
> Regards,
> Agalya
>
>
>
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