SIPREC A. Hutton, Ed.
Internet-Draft Siemens Enterprise Communications
Intended status: Informational L. Portman, Ed.
Expires: November 24, 2013 NICE Systems
R. Jain
IPC Systems
K. Rehor
Cisco Systems, Inc.
May 23, 2013
An Architecture for Media Recording using the Session Initiation
Protocol
draft-ietf-siprec-architecture-08
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.
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 24, 2013.
Hutton, et al. Expires November 24, 2013 [Page 1]
Internet-Draft Architecture for Media Recording May 2013
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Session Recording Architecture . . . . . . . . . . . . . . . 5
3.1. Location of the Session Recording Client . . . . . . . . 5
3.1.1. B2BUA acts as a Session Recording Client . . . . . . 5
3.1.2. Endpoint acts as Session Recording Client . . . . . . 7
3.1.3. A SIP Proxy cannot be a Session Recording Client . . 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. Session Recording Client Initiated Recording . . . . 11
3.2.2. Session Recording Server Initiated Recording . . . . 11
3.2.3. Pause/Resume Recording Session . . . . . . . . . . . 12
3.2.4. Media Stream Mixing . . . . . . . . . . . . . . . . . 12
3.2.5. Media Transcoding . . . . . . . . . . . . . . . . . . 12
3.3. Recording Metadata . . . . . . . . . . . . . . . . . . . 13
3.3.1. Contents of recording metadata . . . . . . . . . . . 13
3.3.2. Mechanisms for delivery of metadata to Session
Recording Server . . . . . . . . . . . . . . . . . . 13
3.4. Notifications to the Recorded User Agents . . . . . . . . 13
3.5. Preventing the recording of a SIP session . . . . . . . . 13
4. IANA considerations . . . . . . . . . . . . . . . . . . . . . 14
5. Security considerations . . . . . . . . . . . . . . . . . . . 14
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 15
7. Informative References . . . . . . . . . . . . . . . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 16
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