Standby high voltage analog line feed

Details Standby high voltage analog line feed Standby high voltage analog line feed

1996-07-03

1999-03-30

Tsang, Fan S.

Telephonic communications

Subscriber line or transmission line interface

Network interface device

379377, 379422, H04M 100

Patent

active

058898581

ABSTRACT:
A standby feed circuit for a subscriber line comprising a constant current power feeding circuit for a subscriber line for supplying a voltage to a subscriber line at a voltage less than a standard central office power feeding circuit, a voltage source for providing the standard voltage, apparatus for applying the standard voltage when a station apparatus connected to the subscriber line is in an on-hook condition, and apparatus for applying said voltage less than the standard voltage in place of the standard voltage when the station apparatus is in an off-hook condition.

REFERENCES:
patent: 5343514 (1994-08-01), Snyder
patent: 5721774 (1998-02-01), Stiefel
Newton's Telecom Dictionary, By Harry Newton 8.sup.th Edition pp. 768-770, Nov. 1994.

Affiliated with

Also associated with

Rating

Standby high voltage analog line feed does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Standby high voltage analog line feed, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Standby high voltage analog line feed will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1221854