An Extension to the Session Description Protocol (SDP) for Media Loopback
draft-ietf-mmusic-media-loopback-16
Internet Draft K. Hedayat
Expires: March 6, 2012 EXFO
N. Venna
Saperix
P. Jones
Cisco Systems, Inc.
A. Roychowdhury
Hughes Systique Corp.
C. SivaChelvan
Cisco Systems, Inc.
N. Stratton
BlinkMind, Inc.
September 6, 2011
An Extension to the Session Description Protocol (SDP) for Media
Loopback
draft-ietf-mmusic-media-loopback-16
Status of this Memo
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Copyright Notice
Hedayat, et al. Expires March 2012 [Page 1]
Internet-Draft SDP Media Loopback September 2011
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Abstract
The wide deployment of Voice over IP (VoIP), Real-time Text and
Video over IP services has introduced new challenges in managing
and maintaining voice/real-time Text/video quality, reliability,
and overall performance. In particular, media delivery is an area
that needs attention. One method of meeting these challenges is
monitoring the media delivery performance by looping media back to
the transmitter. This is typically referred to as "active
monitoring" of services. Media loopback is especially popular in
ensuring the quality of transport to the edge of a given VoIP,
Real-time Text or Video over IP service. Today in networks that
deliver real-time media, short of running 'ping' and 'traceroute'
to the edge, service providers are left without the necessary tools
to actively monitor, manage, and diagnose quality issues with their
service. The extension defined herein adds new SDP media
attributes which enables establishment of media sessions where the
media is looped back to the transmitter. Such media sessions will
serve as monitoring and troubleshooting tools by providing the
means for measurement of more advanced VoIP, Real-time Text and
Video over IP performance metrics.
Table of Contents
1. Introduction
.................................................. 3
1.1 Use Cases Supported
....................................... 4
2. Terminology
................................................... 6
3. Offering Entity Behavior
...................................... 6
4. Answering Entity Behavior
..................................... 6
5. SDP Constructs Syntax
......................................... 6
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