Ring control device

Details Ring control device Ring control device

2006-03-28

2006-03-28

Tran, Sinh (Department: 2646)

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

C379S373010, C379S375010, C379S376010, C379S421000

Reexamination Certificate

active

07020271

ABSTRACT:
A system and method that allows a ringer of a telephone to be silenced on demand without preventing outgoing calls to be placed. In an embodiment of the invention, there is a ring control device comprising a switch, a voltage control device in electrical series with the switch, and a first plug for receiving a first electrical signal, the first electrical signal comprising a first voltage and a second voltage, the first plug disposed in series with and before the voltage control device. The ring control device also includes a second plug for outputting at least one of the first and second voltages of the first electrical signal, the second plug disposed in series with and after the switch. In the ring control device, the voltage control device prevents one of the first and second voltages from passing to the second plug when the switch is in a predetermined position.

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