T.120
(重定向自T.share)
T.120 is an ITU-T recommendation that describes a series of communication and application protocols and services that provide support for real-time, multipoint data communications. It is used by products such as Cisco WebEx's MeetingCenter, Microsoft NetMeeting, Nortel CS 2100 and Lotus Sametime to support application sharing, real-time text conferencing and other functions.