Basic Level of Interoperability for SIP Services (bliss)
Emergency Context Resolution with Internet Technologies (ecrit)
Telephone Number Mapping (enum)
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 (sip)
Session Initiation Proposal Investigation (sipping)
Session PEERing for Multimedia INTerconnect (speermint)
Centralized Conferencing (xcon)
Groups that did not meet at IETF 70
IP Telephony (iptel)
Speech Services Control (speechsc)