Telephone terminal apparatus and method
Telephone with background volume control
Telephone with hands-free operation
Telephone-computer interface
Telephony device with compensation for line losses
Terminal for wirebound telecommunication
Tone detection for integrated telecommunications processing
Transmit/receive arbitrator
Transmitting message playback concurrent with speakerphone...
Two-module telephone terminal
Use of handset microphone to enhance speakerphone...
User control system for internet phone quality
Vandal-resistant communications station
Versatile circuit for interfacing with audio headsets
Voice control circuit for a communication terminal
Voice mail apparatus and control method thereof
Voice signal clipping circuit and telephone set therewith
Voice switched gain system
Voice switched speakerphone with filters having exponential tran
Voice-switched telephone circuit with center idle state