Session Recording Protocol
draft-ietf-siprec-protocol-06

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Document Type Active Internet-Draft (siprec WG)
Last updated 2012-07-13
Replaces draft-portman-siprec-protocol
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SIPREC                                                        L. Portman
Internet-Draft                                              NICE Systems
Intended status: Standards Track                             H. Lum, Ed.
Expires: January 14, 2013                                        Genesys
                                                                C. Eckel
                                                                   Cisco
                                                             A. Johnston
                                                                   Avaya
                                                               A. Hutton
                                                      Siemens Enterprise
                                                          Communications
                                                           July 13, 2012

                       Session Recording Protocol
                     draft-ietf-siprec-protocol-06

Abstract

   This document specifies the use of the Session Initiation Protocol
   (SIP), the Session Description Protocol (SDP), and the Real Time
   Protocol (RTP) for delivering real-time media and metadata from a
   Communication Session (CS) to a recording device.  The Session
   Recording Protocol specifies the use of SIP, SDP, and RTP to
   establish a Recording Session (RS) between the Session Recording
   Client (SRC), which is on the path of the CS, and a Session Recording
   Server (SRS) at the recording device.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 14, 2013.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the

Portman, et al.         Expires January 14, 2013                [Page 1]
Internet-Draft         Session Recording Protocol              July 2012

   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   4.  Scope  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   5.  Overview of operations . . . . . . . . . . . . . . . . . . . .  5
     5.1.  Delivering recorded media  . . . . . . . . . . . . . . . .  5
     5.2.  Delivering recording metadata  . . . . . . . . . . . . . .  7
     5.3.  Receiving recording indications and providing
           recording preferences  . . . . . . . . . . . . . . . . . .  8
   6.  Initiating a Recording Session . . . . . . . . . . . . . . . .  9
     6.1.  Procedures at the SRC  . . . . . . . . . . . . . . . . . . 10
     6.2.  Procedures at the SRS  . . . . . . . . . . . . . . . . . . 10
   7.  SDP Handling . . . . . . . . . . . . . . . . . . . . . . . . . 11
     7.1.  Procedures at the SRC  . . . . . . . . . . . . . . . . . . 11
       7.1.1.  Handling media stream updates  . . . . . . . . . . . . 12
     7.2.  Procedures at the SRS  . . . . . . . . . . . . . . . . . . 13
   8.  RTP Handling . . . . . . . . . . . . . . . . . . . . . . . . . 15
     8.1.  RTP Mechanisms . . . . . . . . . . . . . . . . . . . . . . 15
       8.1.1.  RTCP . . . . . . . . . . . . . . . . . . . . . . . . . 16
       8.1.2.  RTP Profile  . . . . . . . . . . . . . . . . . . . . . 16
       8.1.3.  SSRC . . . . . . . . . . . . . . . . . . . . . . . . . 17
       8.1.4.  CSRC . . . . . . . . . . . . . . . . . . . . . . . . . 17
       8.1.5.  SDES . . . . . . . . . . . . . . . . . . . . . . . . . 17
         8.1.5.1.  CNAME  . . . . . . . . . . . . . . . . . . . . . . 18
       8.1.6.  Keepalive  . . . . . . . . . . . . . . . . . . . . . . 18
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