Protection circuit for telephone switching system

Details Protection circuit for telephone switching system Protection circuit for telephone switching system

1976-02-23

1976-12-07

Robinson, Thomas A.

179 16A, 179 18FA, 179 99, H04M 100

Patent

active

039964264

ABSTRACT:
An open switching interval protection circuit for maintaining continuity on a telephone line during the switching interval of the central office equipment, in which an auxiliary battery voltage is bridged directly across the telephone line under timed control. With such an arrangement the need to break into the talking path or to tie up additional control circuitry in the central office is avoided, thereby providing high reliability at reasonable cost.

REFERENCES:
patent: 3529092 (1970-09-01), Kenedi
patent: 3586785 (1971-06-01), Feiner
patent: 3629514 (1971-12-01), Flamini, Jr.
patent: 3673339 (1972-06-01), Korn
patent: 3886319 (1975-05-01), Walker

Affiliated with

Also associated with

Rating

Protection circuit for telephone switching system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Protection circuit for telephone switching system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection circuit for telephone switching system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-380781