AC Supervisory signal detector circuit

Details AC Supervisory signal detector circuit AC Supervisory signal detector circuit

1980-06-02

1982-01-19

Brown, Thomas W.

H04M 700

Patent

active

043118798

ABSTRACT:
An AC supervisory signal detector circuit for use in conjunction with a trunk circuit of a PABX telephone system connected to a telephone central office. Valid AC supervisory signals are detected to the exclusion of noise signals and response time for detection of termination of AC supervisory signals is improved.

REFERENCES:
patent: 4066848 (1978-01-01), Darwood
patent: 4133982 (1979-01-01), Lee et al.
patent: 4184053 (1980-01-01), Saneyoshi
patent: 4190745 (1980-02-01), Jusinskas, Jr. et al.
"Telephone-Ring Detector Eliminates Relay", J. Gwinn, Electronics, vol. 49, No. 24, Nov. 25, 1976, pp. 112-113.

Affiliated with

Also associated with

Rating

AC Supervisory signal 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 AC Supervisory signal detector circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AC Supervisory signal detector circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1916689