(Instant Messaging and Presence Protocol) The working group of the IETF that specializes in instant messaging. The IMPP group developed the CPIM abstract model, PIDF presence document and spawned working groups for the APEX, PRIM and SIMPLE IM protocols, the latter coming to fruition with major support from various vendors. See presence, CPIM, PIDF and SIMPLE.
A group of specifications proposed by the Internet Engineering Task Force (IETF) and intended to define the protocols necessary to build an IM system that will scale to Internet size.The RFCs define presence requirements, and common semantics and data formats to facilitate the development of gateways between services. See also gateway, IETF, IM, Internet, presence, protocol, RFC, and SIMPLE.