A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : An Extension to the Session Initiation Protocol (SIP)
for Media Loopback
Author(s) : K. Hedayat, et al.
Filename : draft-hedayat-media-loopback-01.txt
Pages : 14
Date : 2004-10-20
The wide deployment of VoIP and Video over IP services has
introduced new challenges in managing and maintaining voice/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 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 and Video
Over IP performance metrics.
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