2. 1956 : AT&T builds the first Picturephone test system 1964 : AT&T introduces Picturephone at the World's Fair, New York
3. 1984 initial guidelines for implementing ISDN 1991 Sep : First commercial audio/video conference 1992 Sep : CU-SeeMe for Macintosh 1995 Aug : CU-SeeMe for Windows 1998 Aug : Microsoft NetMeeting –
4. 1998 July : Millennium Communications starts offering ISDN videoconference rentals in hotels and convention centers. 2000 Oct : First video cell phone 2001 Sep : World's first trans-Atlantic telemedicine gallbladder surgery 2001 Oct : TV reporters use portable satellite videophone to broadcast live from Afghanistan