RTP Clock Source Signalling

Document Type Replaced Internet-Draft (individual)
Last updated 2012-10-11 (latest revision 2012-06-05)
Replaced by draft-ietf-avtcore-clksrc
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


NTP timestamps are used by several RTP protocols for synchronisation and statistical measurement. This memo specificies SDP signalling identifying NTP timestamp clock sources and SDP signalling identifying the media clock sources in a multimedia session.


Aidan Williams (aidan.williams@audinate.com)
Kevin Gross (kevin.gross@avanw.com)
Ray van Brandenburg (ray.vanbrandenburg@tno.nl)
Hans Stokking (stokking@tno.nl)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)