Data/facsimile telephone subset apparatus incorporating electrop

Dedicated data modem system and method

Dedicated data modem system and method

Dedicated line eliminator for facsimile/telephone systems

Delivery of customer data base key using automatic number identi

Delivery-information management method and...

Detection and authentication of multiple integrated receiver...

Detection of a call-waiting tone by a modem

Detection of TDD signals in an automated telephone system

Determining and disclosing the indentity of telephone caller

Determining whether a telephony call is permitted based on...

Device and a method for feeding electric devices from a...

Device and method for isolating voice and data signals on a comm

Device and method for telecommunication systems

Device and method to establish communication

Device for aiding maintenance of an electromechanical installati

Device for automatically processing incoming electronic mail...

Device for connecting a subscriber line to a selected internal l

Device for controlling the application of power to a computer

Device for making videotape recording reservations over a teleph