[21] “RPID: Rich Presence Extensions to the Presence Information Data Format
(PIDF)” by H. Schulzrinne et al. Internet Draft, IETF September 2005, work
in progress.
[22] “The Message Session Relay Protocol” by B. Campbell et al. Internet Draft,
IETF, October 2005, work in progress.
[23] “Relay Extensions for the Message Sessions Relay Protocol (MSRP)” by C.
Jennings et al. Internet Draft, IETF, July 2005, work in progress.
[24] “Session Initiation Protocol (SIP) Extension for Instant Messaging” by B.
Campbell et al. RFC 3428, IETF, December 2000.
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