Session Recording Protocol
RFC 7866

Document Type RFC - Proposed Standard (May 2016; No errata)
Last updated 2016-05-31
Replaces draft-portman-siprec-protocol
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Brian Rosen
Shepherd write-up Show (last changed 2015-02-20)
IESG IESG state RFC 7866 (Proposed Standard)
Consensus Boilerplate Yes
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Responsible AD Alissa Cooper
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IANA IANA review state Version Changed - Review Needed
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Internet Engineering Task Force (IETF)                        L. Portman
Request for Comments: 7866                                  NICE Systems
Category: Standards Track                                    H. Lum, Ed.
ISSN: 2070-1721                                                  Genesys
                                                                C. Eckel
                                                                   Cisco
                                                             A. Johnston
                                        Illinois Institute of Technology
                                                               A. Hutton
                                                                   Unify
                                                                May 2016

                       Session Recording Protocol

Abstract

   This document specifies the use of the Session Initiation Protocol
   (SIP), the Session Description Protocol (SDP), and the Real-time
   Transport 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.  This document considers only
   active recording, where the SRC purposefully streams media to an SRS
   and all participating user agents (UAs) are notified of the
   recording.  Passive recording, where a recording device detects media
   directly from the network (e.g., using port-mirroring techniques), is
   outside the scope of this document.  In addition, lawful intercept is
   outside the scope of this document.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7866.

Portman, et al.              Standards Track                    [Page 1]
RFC 7866               Session Recording Protocol               May 2016

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   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 ..............................8
      5.3. Receiving Recording Indications and Providing Recording
           Preferences ................................................9
   6. SIP Handling ...................................................11
      6.1. Procedures at the SRC .....................................11
           6.1.1. Initiating a Recording Session .....................11
           6.1.2. SIP Extensions for Recording Indications
                  and Preferences ....................................12
      6.2. Procedures at the SRS .....................................12
      6.3. Procedures for Recording-Aware User Agents ................12
   7. SDP Handling ...................................................13
      7.1. Procedures at the SRC .....................................13
           7.1.1. SDP Handling in the RS .............................13
                  7.1.1.1. Handling Media Stream Updates .............14
           7.1.2. Recording Indication in the CS .....................15
           7.1.3. Recording Preference in the CS .....................16
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