[SIPForum-discussion] Need suggestion

Sudhir Kr. Dubey sudhirkr.dubey88 at gmail.com
Fri Jan 11 03:07:36 UTC 2013


As per my knowledge,
Branch parameter can be the same ,once 200 OK has rcvd for that session.

Regards,
Sudhir

On Thu, Jan 10, 2013 at 5:49 PM, Vijay Badola <Vijay.Badola at onmobile.com>wrote:

>  Hi ,
>
> As per RFC 3261 “*The branch parameter value MUST be unique across space and time for*
>
> *   all requests sent by the UA.*”
>
>
>
> So as per my understanding it depends upon time interval  and context,
> whether to reuse *BRANCH ID or not* .
>
>
>
>
>
> *From:* discussion-bounces at sipforum.org [mailto:
> discussion-bounces at sipforum.org] *On Behalf Of *Carlos Eduardo Santos
> *Sent:* Monday, January 07, 2013 10:52 PM
> *To:* SYED IQBAL Ali
> *Cc:* discussion at sipforum.org
> *Subject:* Re: [SIPForum-discussion] Need suggestion
>
>
>
> I guess that if Call-ID are different, so the Branch can be the same.
>
>  2012/12/22 SYED IQBAL Ali <s.iqbalali2005 at gmail.com>
>
> 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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>
>
>
> --
> *Carlos Eduardo S. dos Santos*
>
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-- 



With Regards,

Sudhir Kr. Dubey

Kodiak Networks | Bangalore

*(** *: 080-40005555, Ext-250

   : +91-9035890307

Email: dsudhir at kodiakbetworks.com
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