[SIPForum-discussion] simultaneous INVITEs

[santosh patra]

Hello Niklas

In this scenario, lets take a pratical example that
1. A calls B
2. B is ringing
3. In the mean time if C calls B then though A and B's call has not established, C should get busy response or if the A and B's call is established and B has call waiting activated then C han hear the Ringing of B user and B will get the indication that somebody is  calliing.

Santosh


----- Original Message ----
From: Niklas Fondberg <niklas.fondberg at tilgin.com>
To: discussion at sipforum.org
Sent: Tuesday, 27 March, 2007 1:00:24 AM
Subject: [SIPForum-discussion] simultaneous INVITEs


Hi, 
I new to this list but I hope that the list is what I'm after; an
implementation and design discussion list about SIP.
If my question is wrongly addressed, please forgive me and please point
me the right direction...

My question that I have searched all over for an answer to is quite
simple:

What is the correct behavior for a UA if a second INVITE arrives before
the first has been answered?

SIP Flow:

-------------> INVITE (1)
<------------- 100 Trying (1)
<------------- 180 Ringing (1)
-------------> INVITE (2)
... ???

Here the first (1) INVITE could have been answered by some other UA that
the INVITE might have been forked to and in this case session (2) should
start ringing. 


Niklas Fondberg



_______________________________________________
This is the SIP Forum discussion mailing list
TO UNSUBSCRIBE, or edit your delivery options, please visit http://sipforum.org/mailman/listinfo/discussion
Post to the list at discussion at sipforum.org


		
__________________________________________________________
Yahoo! India Answers: Share what you know. Learn something new
http://in.answers.yahoo.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20070328/d0697a89/attachment-0002.html>