Links to non-IETF SIP/IMS related WGs - Last updated on 22-May-2005 - Is there anything you would like to add? ->
3GPP/3GPP2 - 3rd Generation Partner Program - (SIP based) IMS (over GPRS/CDMA respectively).
IMTC - SIP-H.323 Interworking.
MWIF - Mobile Wireless Internet Forum.
Packet Cable - DCS (Distributed Call Signaling).
OMA - Open Mobile Alliance - (SIP based) Push To Talk.
TISPAN - (part of ETSI) Ensuring proper voice communication between IP based networks and Circuit networks.
