Telephone having hand-set to be used also as voice...

Telephone having receive call indicating function and mute/light

Telephone headset on-line indicator

Telephone identification calling apparatus and procedures

Telephone including an electromechanical transducer, method of a

Telephone instrument

Telephone instrument

Telephone interface circuit

Telephone interface circuit

Telephone key selection aid

Telephone keypad matrix

Telephone keypad matrix

Telephone light adapter

Telephone line automatic prefix dialer

Telephone line bridging sensor

Telephone line coupler

Telephone line coupler

Telephone line coupler

Telephone line interface circuit

Telephone line loop current regulator