Content distribution system and method
Content reproduction device
Content reproduction device
Control and monitoring telecommunication system and method...
Control and surveillance system for prepayment public telephone
Control apparatus for an automated telephone attendant
Control device for a facsimile apparatus
Control of electronic information delivery
Controller for managing data communication with a host computer
Convergence of circuit-switched voice and packet-based media...
Coordinated multiple telephone station system
Coordinated multiple telephone station system
Coordinated transfer of voice and information through a digital
Cordless subunit facsimile system
Cordless telephone system having a handset with non-telephone fu
Coupler for a communications device
Coupler for an acoustic coupled communications device
Coupling device for use with a computer system
Credit card reader
Credit control system for long distance telephone services