Subscriber's electronic line equipment comprising a two-wire-fou

Details Subscriber's electronic line equipment comprising a two-wire-fou Subscriber's electronic line equipment comprising a two-wire-fou

1979-05-24

1981-11-24

Konick, Bernard

179170T, H04B 158

Patent

active

043026362

ABSTRACT:
Equipment without telephone transformer or amplifier.
It is connected to the subscriber by terminals (1, 2) and to the telephone exchange by terminals (3, 4, 5, 6). It comprises a d.c. voltage source (8), four transistors (10, 12, 14, 16) and three pairs of equal resistors (9-11, 13-15 and 17-18). Sidetone is eliminated by the circuit (18-16-17).
Of use in telephone exchanges of all kinds.

REFERENCES:
patent: 3180947 (1965-04-01), Haselton, Jr. et al.
patent: 3513259 (1970-05-01), Lindgren et al.
patent: 3886322 (1975-05-01), Colardelle et al.
patent: 4081616 (1978-03-01), Dumont

Affiliated with

Also associated with

Rating

Subscriber's electronic line equipment comprising a two-wire-fou 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 electronic line equipment comprising a two-wire-fou, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subscriber's electronic line equipment comprising a two-wire-fou will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2176150