This document lists the different mechanisms that enable applications
using Real-time Transport Protocol (RTP) to maintain their RTP
Network Address Translator (NAT) mappings alive. It also makes a
recommendation for a preferred mechanism. This document is not
applicable to Interactive Connectivity Establishment (ICE) agents.
Working Group Summary
This document began in 2006 as a proposed BEHAVE work item with
broader scope. The scope was refined after discussion between
BEHAVE, MMUSIC, and AVT Working Groups to that indicated above.
The rtp-keepalive SDP parameter was added by direction of the
AVT Chair when no comments were received either for or against
This document was shaped by comments from a number of contributors,
as listed in the Acknowledgments section. As a general application
guide, it is expected to have broad implementation.
Tom Taylor is Document Shepherd.