Multipurpose subscriber local line monitoring device

Details Multipurpose subscriber local line monitoring device Multipurpose subscriber local line monitoring device

1989-10-26

1990-11-06

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Monitoring

379 27, H04M 100

Patent

active

049691783

ABSTRACT:
This invention relates to a multipurpose subscriber local line monitoring device and more particularly to the one which uses a voltage detecting circuit, a current detecting circuit, two control circuits and a comparator circuit to detect breaking, short-circuit or illegal connection of the subscriber local line, and which uses an alarm circuit and a sound generating circuit to give an audio alarm signal to the subscriber when the subscriber local line fails to work.

Affiliated with

Also associated with

Rating

Multipurpose subscriber local line monitoring device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multipurpose subscriber local line monitoring device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multipurpose subscriber local line monitoring device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1312183