This draft has expired, and was not published as an RFC. A separate page describes the Mbus concept.

The local conference Message Bus (Mbus) provides a means to achieve the necessary amount of coordination between co-located conferencing applications for virtually any type of conference. The Message Bus comprises two logically distinct parts: a message transport and addressing infrastructure and a set of common as well as media tool specific messages. This document defines protocol procedures for the Message Bus operation and the syntax and semantics of several sets of Mbus messages: common messages understood by all application entities as well as messages specific to particular classes of applications. The underlying message passing and addressing mechanisms for the Mbus is defined in a companion Internet draft.

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