[SIPForum-discussion] Need suggestion

[Abhisek Acharya]

Hey Syed,

Good morning..Why you are worried about branch parameter in OPTION
message.I really do not think it has any significance....It has
significance in a normal SIP call where
branch ids distinguish between different transactions.But I believe answer
to your question is yes you can do that.I will still wait for other guys
comment on this.

Are you using OPTION as a keep-alive......right now....?If yes i dont see a
problem with your branch id. Over to rest of the folks.


Regards
Abhisek Acharya

On Sun, Dec 23, 2012 at 1:49 AM, SYED IQBAL Ali <s.iqbalali2005 at gmail.com>wrote:

> Hi i have a question about branch parameter in Via header for below
> scenarios.
>
>
>
>
>
> Scenarios:
>
> 1)
>
> OPTIONS sip:user1 at Server_IP SIP/2.0
>
> Via:SIP/2.0/UDP Client_IP:9080;branch=z9hG4bKABC
>
> Call-ID: Call_ID1 at Client_IP:9080
>
> From: <sip:user1 at Client_IP:9080>;tag=1000000-0-803298131-9080
>
> To: <sip:user1 at Server_IP:5060>
>
> CSeq: 1 OPTIONS
>
> Content-Length: 0
>
> Contact: <sip:user1 at Client_IP:9080>
>
> Max-Forwards: 70
>
>
>
> ====================
>
> 2)
>
> OPTIONS sip:user2 at Server_IP SIP/2.0
>
> Via:SIP/2.0/UDP Client_IP:9080;branch=z9hG4bKABC
>
> Call-ID: Call_ID2 at Client_IP:9080
>
> From: <sip:user2 at Client_IP:9080>;tag=1000000-0-803298131-9080
>
> To: <sip:user2 at Server_IP:5060>
>
> CSeq: 2 OPTIONS
>
> Content-Length: 0
>
> Contact: <sip:user1 at Client_IP:9080>
>
> Max-Forwards: 70
>
>
>
> 1) My question is can we use same branch parameter in both OPTIONS
> requests having different call ids or not?
>
>
>
> -Call ids are different for both request.
>
> -SIP URI is different for both call legs.
>
> - To and from headers are different for both scenarios.
> -Cseq are different in both cases.
>
>
> --
> SYED IQBAL ALI
>
> s.iqbalali2005 at gmail.com
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