Universal amplified telephone handset
Universal apparatus and method for interfacing signals with...
Universal telephone handset interface
Use of handset microphone to enhance speakerphone...
User configurable telephone with alarm feature
User control system for internet phone quality
Vandal-resistant communications station
Variable bandwidth handsfree telephone using switched capacitor
Variable sidetone system for reducing amplitude induced...
Versatile circuit for interfacing with audio headsets
Viewing angle compensation of LCD display
Vocal frequency suppression apparatus and method
Voice activity detection system and method
Voice changer
Voice circuit of telephone
Voice communication link interface
Voice control circuit for a communication terminal
Voice level controller
Voice mail apparatus and control method thereof
Voice signal clipping circuit and telephone set therewith