Basic Level of Interoperability for SIP Services (bliss)
Internet Wideband Audio Codec (codec)
Data for Reachability of Inter/tra-NetworK SIP (drinks)
Emergency Context Resolution with Internet Technologies (ecrit)
Geographic Location/Privacy (geopriv)
Media Server Control (mediactrl)
Multiparty Multimedia Session Control (mmusic)
Peer-to-Peer Session Initiation Protocol (p2psip)
SIP for Instant Messaging and Presence Leveraging Extensions (simple)
Session Initiation Protocol Core (sipcore)
Session PEERing for Multimedia INTerconnect (speermint)
Centralized Conferencing (xcon)
Extensible Messaging and Presence Protocol (xmpp)
Groups that did not meet at IETF 75
Telephone Number Mapping (enum)
Speech Services Control (speechsc)