From: The IESG To: IETF-Announce Message-Id: Date: Tue, 21 Aug 2007 10:37:47 -0400 Subject: [Sipping] Protocol Action: 'IPv6 Transition in the Session Initiation Protocol (SIP)' to Proposed Standard The IESG has approved the following document: - 'IPv6 Transition in the Session Initiation Protocol (SIP) ' as a Proposed Standard This document is the product of the Session Initiation Proposal Investigation Working Group. The IESG contact persons are Jon Peterson and Cullen Jennings. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-sipping-v6-transition-07.txt Technical Summary This document describes how IPv4 Session Initiation Protocol (SIP) user agents can communicate with IPv6 SIP user agents (and vice versa) at the signaling layer as well as exchange media once the session has been successfully set up. Both single- and dual-stack (i.e., an IPv4-only and an IPv4/IPv6) user agents are considered. Working Group Summary The SIPPING WG supports the development and advancement of this document. In addition, this document updates RFC 3264, which was developed in the MMUSIC WG. However, the MMUSIC chairs have agreed to the completion of this work within the SIPPING WG. Protocol Quality This document defines a normative update to the processing described in RFC 3264. It does not introduce any new protocol elements. This normative processing is clearly defined in section 4.1. This document was thoroughly reviewed by WG chairs and WG members, including those with expertise in IPv4 to IPv6 transitions and interworking. Mary Barnes is the WG chair shepherd. Jon Peterson is the responsible Area director. Gen-ART review was provided by Suresh Krishnan