An Extension to the Session Description Protocol (SDP) for Media Loopback
draft-ietf-mmusic-media-loopback-17

The information below is for an old version of the document
Document Type Active Internet-Draft (mmusic WG)
Authors Hadriel Kaplan  , Kaynam Hedayat  , Nagarjuna Venna  , Paul Jones  , Arjun Roychowdhury  , C Sivachelvan  , Nathan Stratton 
Last updated 2012-03-12
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Internet Draft                                        H. Kaplan (ed.) 
  Expires: August 12, 2012                                  Acme Packet 
                                                             K. Hedayat 
                                                                   EXFO 
                                                               N. Venna 
                                                                Saperix 
                                                               P. Jones 
                                                    Cisco Systems, Inc. 
                                                        A. Roychowdhury 
                                                  Hughes Systique Corp. 
                                                         C. SivaChelvan 
                                                    Cisco Systems, Inc. 
                                                            N. Stratton 
                                                        BlinkMind, Inc. 
                                                         March 10, 2012 
  
     An Extension to the Session Description Protocol (SDP) for Media 
                                Loopback 
                   draft-ietf-mmusic-media-loopback-17
                                      
  
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    This Internet-Draft is submitted to IETF in full conformance with 
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    This Internet-Draft will expire on August 12, 2012. 
      
  
  
 Kaplan, et al.           Expires August 2012                 [Page 1] 

 Internet-Draft            SDP Media Loopback                March 2012 
  
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 Abstract
     
    The wide deployment of Voice over IP (VoIP), Text and Video over IP 
    services has introduced new challenges in managing and maintaining 
    real-time 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...................................................5 
    3. Offering Entity Behavior......................................6 
    4. Answering Entity Behavior.....................................6 
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