I-D ACTION:draft-hedayat-media-loopback-01.txt

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	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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