[SIPForum-discussion] regarding early dailog

[santosh patra]

Hello Mohan

As you said that Dialog= FROM tag + TO tag + Call-ID.
And Yes you are right also...But intial invite will not have To tag and the message will have only From Tag. Once Callee receives invite and sends 180 Ringing in that message will have TO tag, that TO tag. From tag and Call-ID is called as Early Dialog because 180 Rigning is a Provisional response.And Dialog once caller receives 200 Ok responce with From/To tag and Call-ID, i.e. called Dialog.

I guess this will clarify you better.

Thanks
Santosh


----- Original Message ----
From: mohan divakar <mohandivakar2005 at yahoo.co.in>
To: discussion at sipforum.org
Sent: Tuesday, 3 April, 2007 11:31:18 AM
Subject: [SIPForum-discussion] regarding early dailog


Hi,
what is the difference between early dailog and dailog.
dailog always contains TO tag FROM tag and Call-Id.
Is this same in both ealry dailog and dailog.
 
 
regards
Mohan


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