Telephone having convenience feature data transfer capability

Telephone interface call processing system with call selectivity

Telephone interface call processing system with call selectivity

Telephone interface call processing system with call selectivity

Telephone interface call processing system with call selectivity

Telephone interface call processing system with call...

Telephone interface circuit

Telephone interface for a computer for receiving and transmittin

Telephone interface protection circuit and modem using same

Telephone interrupter

Telephone line called number recognizer

Telephone line exclusion device

Telephone line interface and dialer circuitry for telecommunicat

Telephone line interface option module

Telephone line interfacing circuit used for both voice and...

Telephone line monitoring apparatus and method

Telephone line powered system

Telephone line priority sharing device

Telephone line sharing for a personal computer system

Telephone line use enablement of lottery or fund participation