[SIPForum-discussion] use of multiple contact (prakash k)

Stephen James sjames_1958 at yahoo.com
Tue Jun 9 16:31:04 UTC 2009

There will be only one Contact in a 2xx final response. As there can be only one target for the Dialog.
Even with Forking the Forking proxy will return only the best (only one) final response.
The case of redirection as this is a non-2xx final response and the UAS may then send new Requests to the Contacts in the 3xx message.

-----Inline Message Follows-----

Hi Abishek,

I have one doubt if there is no concept of  multiple contact in SIP then how come this forking concept will be there?
Also there is possibility of multiple contact in responses sent by redirection server.

Prakash k

From: "abhishek.chattopadhyay at wipro.com" <abhishek.chattopadhyay at contactwipro.com>
To: vikasraigupta at gmail.com; discussion at sipforum.org
Sent: Monday, 8 June, 2009 1:17:35 PM
Subject: Re: [SIPForum-discussion] use of multiple contact

Contact should be only one according to RFC3261.
BTW what might be the use of more than one ? 
Moreover sip dialogs are peer to peer relationships.


-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of VG
Sent: Saturday, June 06, 2009 10:57 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] use of multiple contact


In sip is their any mechanism to provide multiple contact information.

Also if UAS wants to keep only first contact then what message will it
shoot to UAC.

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