Precisely, just to elaborate the transaction timeout for UPDATE vis-à-vis
re-INVITE is an interesting point to consider for selective usage.

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-----Original Message-----
From: sip-implementors-boun...@lists.cs.columbia.edu
[mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Paul
Kyzivat
Sent: Friday, May 21, 2010 7:23 PM
To: Sunil Bhagat
Cc: sip-implementors@lists.cs.columbia.edu
Subject: Re: [Sip-implementors] UPDATE method without any SDP

As has been noted, it can be used in this form to revise the Contact 
address, and it may be used to refresh a session-timer. INFO is no good 
for either of those things.

It has advantages, over reINVITE, for both of those things in that you 
can be certain that there will be no new offer/answer exchange.

        THanks,
        Paul

Sunil Bhagat wrote:
> Hi All,
> 
>  
> 
> I have a small query regarding UPDATE method. 
> 
> UPDATE method is used to change the session parameters. I wanted to know,
> what is the use of sending UPDATE without any sdp.
> 
>  
> 
> Thanks,
> 
> Sunil
> 
> _______________________________________________
> Sip-implementors mailing list
> Sip-implementors@lists.cs.columbia.edu
> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
> 
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