Facsimile apparatus adapted to communicate via an acoustic coupl

Facsimile apparatus with a mode for receiving non-image informat

Facsimile security system

Facsimile system of distinctive ringing type capable of automati

Facsimile/voice phone combined device producing DTMF oscillation

Faster modem method and apparatus

Feature configurable telephone terminal

Fiber optic internet protocol network interface device and...

Fiber optic premise wiring system

Filter arrangement

First party signalling for call waiting calling number...

Flexible telecommunications line interface

Full featured data access arrangement for use with modems

Full-duplex adapter for PBX telephone system

Fully digital call processing platform