Voice processing system
Voice processing system with telephone interface subsystem
Voice response unit with a visual menu interface
Voice transmitter
Voice, data and facsimile modem with modified ringback answering
Voice-and-data modem call-waiting
Voice-data telephonic control system
Voice-data telephonic control system
Voice-data telephonic interface control system
Voice-data telephonic interface control system
Voice-data telephonic interface control system
Voice-data telephonic interface control system
Voice/image simultaneous communication apparatus