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An Architecture for Media Recording using the Session Initiation Protocol
draft-ietf-siprec-architecture-12

Document type: Active Internet-Draft (siprec WG)
Document stream: IETF
Last updated: 2014-03-01 (latest revision 2014-02-27)
Intended RFC status: Informational
Other versions: plain text, pdf, xml, html

IETF State: Submitted to IESG for Publication
Consensus: Yes
Document shepherd: Brian Rosen
Shepherd Write-Up: Last changed 2013-09-13

IESG State: RFC Ed Queue
IANA Review State: IANA OK - No Actions Needed
IANA Action State: No IC
RFC Editor State: EDIT
Responsible AD: Gonzalo Camarillo
Send notices to: siprec-chairs@tools.ietf.org, draft-ietf-siprec-architecture@tools.ietf.org

SIPREC                                                    A. Hutton, Ed.
Internet-Draft                                                     Unify
Intended status: Informational                           L. Portman, Ed.
Expires: August 31, 2014                                    NICE Systems
                                                                 R. Jain
                                                             IPC Systems
                                                                K. Rehor
                                                     Cisco Systems, Inc.
                                                       February 27, 2014

    An Architecture for Media Recording using the Session Initiation
                                Protocol
                   draft-ietf-siprec-architecture-12

Abstract

   Session recording is a critical requirement in many communications
   environments such as call centers and financial trading.  In some of
   these environments, all calls must be recorded for regulatory,
   compliance, and consumer protection reasons.  Recording of a session
   is typically performed by sending a copy of a media stream to a
   recording device.  This document describes architectures for
   deploying session recording solutions in an environment which is
   based on the Session Initiation Protocol (SIP).

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 August 31, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Hutton, et al.           Expires August 31, 2014                [Page 1]
Internet-Draft      Architecture for Media Recording       February 2014

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Definitions . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Session Recording Architecture  . . . . . . . . . . . . . . .   5
     3.1.  Location of the SRC . . . . . . . . . . . . . . . . . . .   5
       3.1.1.  B2BUA acts as a SRC . . . . . . . . . . . . . . . . .   5
       3.1.2.  Endpoint acts as SRC  . . . . . . . . . . . . . . . .   7
       3.1.3.  A SIP Proxy cannot be a SRC . . . . . . . . . . . . .   7
       3.1.4.  Interaction with MEDIACTRL  . . . . . . . . . . . . .   8
       3.1.5.  Interaction with Conference Focus . . . . . . . . . .   9
     3.2.  Establishing the Recording Session  . . . . . . . . . . .  10
       3.2.1.  SRC Initiated Recording . . . . . . . . . . . . . . .  11
       3.2.2.  SRS Initiated Recording . . . . . . . . . . . . . . .  11
       3.2.3.  Pause/Resume Recording Session  . . . . . . . . . . .  12
       3.2.4.  Media Stream Mixing . . . . . . . . . . . . . . . . .  12
       3.2.5.  Media Transcoding . . . . . . . . . . . . . . . . . .  12
       3.2.6.  Lossless Recording  . . . . . . . . . . . . . . . . .  12
     3.3.  Recording Metadata  . . . . . . . . . . . . . . . . . . .  13
       3.3.1.  Contents of recording metadata  . . . . . . . . . . .  13
       3.3.2.  Mechanisms for delivery of metadata to SRS  . . . . .  13
     3.4.  Notifications to the Recorded User Agents . . . . . . . .  13
     3.5.  Preventing the recording of a SIP session . . . . . . . .  13
   4.  IANA considerations . . . . . . . . . . . . . . . . . . . . .  13
   5.  Security considerations . . . . . . . . . . . . . . . . . . .  14
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   7.  Informative References  . . . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

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