[Sip] REFER and Replaces with early dialogs
"JF Rey" <jfr@post.com> Thu, 14 February 2002 14:40 UTC
Received: from optimus.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA22621 for <sip-archive@odin.ietf.org>; Thu, 14 Feb 2002 09:40:41 -0500 (EST)
Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id JAA01183 for sip-archive@odin.ietf.org; Thu, 14 Feb 2002 09:40:44 -0500 (EST)
Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id JAA00176; Thu, 14 Feb 2002 09:20:54 -0500 (EST)
Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id JAA00145 for <sip@optimus.ietf.org>; Thu, 14 Feb 2002 09:20:52 -0500 (EST)
Received: from ws1-3.us4.outblaze.com (205-158-62-55.outblaze.com [205.158.62.55]) by ietf.org (8.9.1a/8.9.1a) with SMTP id JAA18625 for <sip@ietf.org>; Thu, 14 Feb 2002 09:20:44 -0500 (EST)
Received: (qmail 93519 invoked by uid 1001); 14 Feb 2002 14:20:15 -0000
Message-ID: <20020214142015.93518.qmail@mail.com>
Content-Type: text/plain; charset="iso-8859-1"
Content-Disposition: inline
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
X-Mailer: MIME-tools 5.41 (Entity 5.404)
Received: from [212.208.74.200] by ws1-3.us4.outblaze.com with http for jfr@post.com; Thu, 14 Feb 2002 22:20:15 +0800
From: JF Rey <jfr@post.com>
To: sip@ietf.org
Date: Thu, 14 Feb 2002 22:20:15 +0800
X-Originating-Ip: 212.208.74.200
X-Originating-Server: ws1-3.us4.outblaze.com
Content-Transfer-Encoding: 7bit
Subject: [Sip] REFER and Replaces with early dialogs
Sender: sip-admin@ietf.org
Errors-To: sip-admin@ietf.org
X-Mailman-Version: 1.0
Precedence: bulk
List-Id: Session Initiation Protocol <sip.ietf.org>
X-BeenThere: sip@ietf.org
Content-Transfer-Encoding: 7bit
I'm quite sure that someone already asked about this, but I did not find it in the archives. I try to understand whether a SIP phone can transfer another one when the target of the transfer is ringing. draft-biggs-sip-replaces-01.txt states that <DRAFT_QUOTE> The to-tag and from-tag parameters MUST be included in the Replaces header, </DRAFT_QUOTE> and <DRAFT_QUOTE> If the Replaces header matches an unestablished call leg, that it, the INVITE request for the call has not received or been sent a final response, the Replaces header MUST be ignored. </DRAFT_QUOTE> I don't understand the last sentence. Why ignore Replaces even if a match was found thanks to it ? In bis07, the to-tag is mandatory for 1xx (other than 100) responses. So, Replaces could match an early dialog as soon as a 1xx (other than 100) is sent/received. Did I overlook something ? Regards, Jean-Francois Rey -- _______________________________________________ Sign-up for your own FREE Personalized E-mail at Mail.com http://www.mail.com/?sr=signup Win a ski trip! http://www.nowcode.com/register.asp?affiliate=1net2phone3a _______________________________________________ Sip mailing list https://www1.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use sip-implementors@cs.columbia.edu for questions on current sip Use sipping@ietf.org for new developments on the application of sip