Key telephone line shunt detector circuit

Details Key telephone line shunt detector circuit Key telephone line shunt detector circuit

1980-09-26

1982-04-06

Brigance, Gerald L.

H04M 100

Patent

active

043237355

ABSTRACT:
A line circuit is disclosed for controlling communications over a communication pair between a switching machine and a key telephone station. The line circuit includes a dual sensitivity shunt detector arrangement (103, 104, 105) for improved detection of dc transients and ac ringing voltage signals appearing across the pair. A current diverter circuit (104) switches the sensitivity of the shunt detector arrangement depending on the operating state of the key telephone station.

REFERENCES:
patent: 3436488 (1969-04-01), Banbato et al.
patent: 4039763 (1977-08-01), Angner et al.
patent: 4057693 (1977-11-01), Angner et al.
patent: 4087646 (1978-05-01), Brolin et al.
patent: 4093830 (1978-06-01), Pappas
patent: 4101740 (1978-07-01), Barsellotti
patent: 4101741 (1978-07-01), Kunstatter

Affiliated with

Also associated with

Rating

Key telephone line shunt detector circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Key telephone line shunt detector circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key telephone line shunt detector circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-593954