Remote test telephone line access system

Details Remote test telephone line access system Remote test telephone line access system

1986-10-30

1988-12-13

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Of trunk or long line

379 29, H04M 124

Patent

active

047916591

ABSTRACT:
An improved remote test access system (100) for remotely testing an accessed telephone line (T/R) with any conventional telephone test set (102) without introducing any errors or hits to the line (T/R), uses a fixed reference delay (110, 112) which is always in the signal path and a variable delay (120, 122) which is in the test path and is varied so that the sum of the variable delay (120, 122) and the test set (102) delay equals the fixed reference delay (110, 112).

REFERENCES:
patent: 3899738 (1975-08-01), Harzer
patent: 3910322 (1975-10-01), Hardesty, Jr. et al.
patent: 4059729 (1977-11-01), Eddy et al.
patent: 4090035 (1978-05-01), Popkin
patent: 4110572 (1978-08-01), Cochrane
patent: 4112264 (1978-09-01), Abramson et al.
patent: 4393492 (1983-07-01), Bishop
patent: 4402075 (1983-08-01), Bargeton et al.
patent: 4455644 (1984-06-01), Fox et al.
patent: 4529979 (1985-07-01), Kusama et al.
patent: 4569042 (1986-02-01), Larson
patent: 4577309 (1986-03-01), Barazeche et al.
patent: 4601028 (1986-07-01), Huffman et al.

Affiliated with

Also associated with

Rating

Remote test telephone line access system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Remote test telephone line access system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remote test telephone line access system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2201517