Fax/telephone switching device
Feature configurable telephone terminal
Fiber optic internet protocol network interface device and...
Fiber optic premise wiring system
Filter arrangement
Financial card authorization system
First party signalling for call waiting calling number...
Flexible telecommunications line interface
Form creating and ordering system
Free standing data transfer device for coupling a facsimile mach
Frequency responsive apparatus for reading a meter over a teleph
Full featured data access arrangement for use with modems
Full-duplex adapter for PBX telephone system
Fully digital call processing platform
Games on hold telephony service
Gas meter with remote control for terminating supply of gas and
General analysis system
Global delivery of radio broadcasts via public telephone...
Graphical software for reconfiguring modems having an...
Graphical telephone system