Subscriber line interface circuit with power-down mode

Details Subscriber line interface circuit with power-down mode Subscriber line interface circuit with power-down mode

1989-10-18

1991-09-03

Dwyer, James L.

Telephonic communications

Subscriber line or transmission line interface

379413, H04M 400

Patent

active

050460897

ABSTRACT:
A method of lowering the power absorbed by an interface circuit, in the "power-down" state thereof, as incorporated to a telephone exchange and connected to a telephone subscriber line, being of a type which comprises a monitoring circuit portion connected between the line and the exchange. The method involves the steps of,

REFERENCES:
patent: 4419542 (1983-12-01), Embree et al.
patent: 4908856 (1990-03-01), Poletto

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