[SIPForum-discussion] What is "inside dialog" and "outside dialog"

[Santosh Iyer]

Well to understand the difference between inside and outside dialog, I guess you need to understand what a dialog is. 
A dialog is a relationship between two endpoints which is identified by a combination of the callid, to-tag and from-tag.
So for example messages like Re-Invite, BYE are considered as in-dialog messages as they can be identified by those three parameters
Whereas an Initial Invite can be considered as an out-of-dialog message.(reason being we are still waiting for a response with the to-tag and a dialog has not been formed yet).
Santosh
--- On Mon, 1/14/13, Khoa Pham <onmyway133 at gmail.com> wrote:

From: Khoa Pham <onmyway133 at gmail.com>
Subject: [SIPForum-discussion] What is "inside dialog" and "outside dialog"
To: discussion at sipforum.org
Date: Monday, January 14, 2013, 11:22 AM

When reading SIP, I often encounter these two terminologies. Sometimes they say "Sending request inside dialog", sometimes they say "Sending request outside dialog".
So what do they mean ?


-- 
Khoa Pham
HCMC University of Science
Faculty of Information Technology




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