Arbitrary selecting of a terminal to be called in key telephone
Arrangement for acquisition of services via a telephone set
Arrangement for authenticating user and authorizing use of...
Arrangement for data transmission utilizing telephone network
Arrangement for displaying menu screens on a telephone terminal
Arrangement for entering information into a directory on a telep
Arrangement for interfacing a telephone device with a personal c
Arrangement for securing menu screens on a telephone terminal
Arrangement for varying the display time for messages displayabl
Auction information transmission processing system
Audio communication system
Audio communications device adapter
Audio status communication from an embedded device
Audio status communication from an embedded device
Audio/modem interface unit
Audiographics communication system
Authenticated communications access service
Authentication device
Auto-answer videotex terminal
Autobaud rate detection mechanism