Source : Free On-Line Dictionary of Computing

audiographic teleconferencing
     
         (Or "electronic whiteboarding", "screen
        sharing") A form of {teleconferencing} in {real time} using
        both an {audio} and a data connection.  The computer screen is
        shared by more than one site, and used as an electronic
        blackboard, overhead projector or still video projector.  Some
        systems allow for sharing software also.
     
        (1995-10-06)