[SIPForum-discussion] use of multiple contact

[abhishek.chattopadhyay at wipro.com]

Well, for some time I mistakenly assumed that the discussion was going
on only for dialog forming requests.

 

Anyways the point is multiple contacts can be present in register, 200
ok to a register with no contact, and 3xx messages, but not in any
dialog forming request.

 

 

 

 

Regards 
ABHISHEK 

 

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of shiba shankar rout
Sent: Tuesday, June 09, 2009 9:52 AM
To: vikasraigupta at gmail.com; discussion at sipforum.org;
abhishek.chattopadhyay at contactwipro.com
Subject: Re: [SIPForum-discussion] use of multiple contact

 

Hi ,

Abhisek:  Its not like we should have only one contact field. Where did
u get this statement ? 

In fact we can have  more than one contact  field  with different expire
values. We can use  it. No issues.

But my question is what is the advantage of using more than one contact
field. Any real scenario ? I mean is it only for  REGISTER request or
INVITE ?

Thanks, 
S S Rout




On Mon, Jun 8, 2009 at 9:57 PM, prakash k <prakash_12305 at yahoo.co.in>
wrote:

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.

 

Regards
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.



Regards 
ABHISHEK


-----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

hi,

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.

Regards,
VG
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