Subscriber's telephone circuit arranged to present constant impe

Details Subscriber's telephone circuit arranged to present constant impe Subscriber's telephone circuit arranged to present constant impe

1984-09-07

1985-10-29

George, Keith E.

179 81B, H04M 160

Patent

active

045502269

ABSTRACT:
A transformerless telephone circuit including an integrated circuit pulse dialer and transmit, receive and ringer circuitry employing discrete components. Included in the transmit, receive and dialer circuitry are fixed resistive components, which in combination with each other present a constant impedance to said telephone line.

REFERENCES:
patent: 3529099 (1970-09-01), Ribner
patent: 3789155 (1974-01-01), Fensom
patent: 4167655 (1979-09-01), Hestad et al.
patent: 4303805 (1981-12-01), Synek et al.
patent: 4354060 (1982-10-01), Niertit et al.
patent: 4359609 (1982-11-01), Apfel
patent: 4400588 (1983-08-01), Stobbs et al.
patent: 4495382 (1985-01-01), Smith et al.
patent: 4503289 (1985-03-01), Spires

Affiliated with

Also associated with

Rating

Subscriber's telephone circuit arranged to present constant impe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Subscriber's telephone circuit arranged to present constant impe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subscriber's telephone circuit arranged to present constant impe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-729687