Managing a communications system by offering participants...

Managing multicast conference calls

Media based collaboration using mixed-mode PSTN and internet...

Method and an apparatus for terminating a user from a group...

Method and apparatus for a talkgroup call in a wireless CDMA sys

Method and apparatus for a talkgroup call in a wireless...

Method and apparatus for allowing communication within a group

Method and apparatus for an audio bridge

Method and apparatus for centralized multipoint conferencing in

Method and apparatus for centralized multipoint conferencing...

Method and apparatus for conferencing in an expandable telecommu

Method and apparatus for controlling a conference call

Method and apparatus for controlling switching of...

Method and apparatus for dynamic allocation of conferencing...

Method and apparatus for efficiently utilizing conference...

Method and apparatus for establishing a distributed...

Method and apparatus for establishing a voice call by way of...

Method and apparatus for exchange of information in a...

Method and apparatus for exchange of information in a...

Method and apparatus for exchange of information in a...