Method and apparatus for improving telephone hybrid network

Details Method and apparatus for improving telephone hybrid network Method and apparatus for improving telephone hybrid network

1979-09-05

1981-06-30

Moffitt, James W.

1791702, 17917531E, H04B 320

Patent

active

042764505

ABSTRACT:
A circuit and method for controlling the connection of a cancellation network between the four-wire input and output of a hybrid transformer at the two-wire to four-wire interface of a telephone line. The relative phase of a signal applied to the four-wire input appearing on the four-wire output, is used to determine whether the two-wire telephone line appears loaded or non-loaded. This in turn controls the selection of the appropriate cancellation network which will give the greatest singing return loss.

REFERENCES:
patent: 3161838 (1964-12-01), Flanagan et al.
patent: 3290452 (1966-12-01), Olson
patent: 3588385 (1971-06-01), Moye
patent: 3982080 (1976-09-01), Ukeiley
patent: 4096362 (1978-06-01), Crawford
patent: 4224483 (1980-09-01), Neigh et al.

Affiliated with

Also associated with

Rating

Method and apparatus for improving telephone hybrid network does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for improving telephone hybrid network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for improving telephone hybrid network will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2434467