Ring relay control unit for foreign exchange station

Details Ring relay control unit for foreign exchange station Ring relay control unit for foreign exchange station

2006-04-18

2006-04-18

Harold, Jefferey F. (Department: 2646)

Telephonic communications

Subscriber line or transmission line interface

Power supply

C379S418000, C379S375010

Reexamination Certificate

active

07031464

ABSTRACT:
The ring relay control unit of an FXS includes a main control unit for controlling relay interrupt command; a relay control device for generating a relay control signal in accordance with a relay interrupt command transferred from the main control unit, an SLIC for interfacing a call signal to a subscriber's phone, a ring signal generator for generating a ring signal transferred to the subscriber's phone, and transferring a synchronous signal, which generates a relay control signal, to the relay control device, and a relay for selectively transferring the call signal and the ring signal to the subscriber's phone from the SLIC and the ring signal generator.

REFERENCES:
patent: 5666355 (1997-09-01), Huah et al.
patent: 5790654 (1998-08-01), Eklof
patent: 6434225 (2002-08-01), Azami et al.

Affiliated with

Also associated with

Rating

Ring relay control unit for foreign exchange station does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ring relay control unit for foreign exchange station, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ring relay control unit for foreign exchange station will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3533597