Method for activating a lamp on analog customer premises equipme

Details Method for activating a lamp on analog customer premises equipme Method for activating a lamp on analog customer premises equipme

1995-12-22

1997-03-18

Zele, Krista M.

Telephonic communications

Supervisory or control line signaling

Using line or loop condition detection

379 67, 379350, 379399, H04M 100

Patent

active

056129955

ABSTRACT:
An apparatus and method for illuminating a message lamp on analog customer premises equipment (CPE) under the control of a digital switch. A message conversion circuit (MCC) which is positioned intermediate to the digital switch and the analog CPE controls an on-hook isolation and relay circuit to selectively connect the subscriber line associated with the analog CPE with a voltage supply to illuminate the message lamp.

REFERENCES:
patent: 4438506 (1984-03-01), Strom
patent: 4969186 (1990-11-01), Sayre, II
patent: 5280523 (1994-01-01), Lee
patent: 5305377 (1994-04-01), D'Arcy et al.
patent: 5384832 (1995-01-01), Zimmerman et al.
patent: 5448635 (1995-09-01), Biehl et al.
patent: 5521964 (1996-05-01), Schull et al.

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