Ringing phone line selector/VOIP switch

Details Ringing phone line selector/VOIP switch Ringing phone line selector/VOIP switch

2005-09-12

2010-06-29

Jamal, Alexander (Department: 2614)

Telephonic communications

Multi-line or key substation system with selective switching...

Reexamination Certificate

active

07746993

ABSTRACT:
A phone line selector module used in telecommunications related equipment for automatically sensing and switching back and forth between first and second input ports. The selector module includes a two-piece inter-fitting housing which receives a miniature printed circuit board therein. The miniature printed circuit board is used to mount phone line selector circuitry thereon. The phone line selector circuitry includes a first ring sensing circuit, a second ring sensing circuit, and a latching relay.

REFERENCES:
patent: 2003/0108032 (2003-06-01), Kato

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