Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1975-11-05
1979-02-13
Olms, Douglas W.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
1791753R, 324 52, H04B 346, H04M 326
Patent
active
041397452
ABSTRACT:
A computer controlled system for the diagnostic testing of two wire telephone lines. The system comprises a control means having a programmed digital computer and associated memory, a line test network, a user station and an interface for interconnecting these elements and one or more telephone exchanges and a plurality of two wire telephone lines extending from the exchanges. The line test network is responsive to the digital computer and includes means for generating a plurality of line characteristic signals during a test cycle for a selected line. The characteristic signals are representative of the resistance and reactance between a reference potential and each of the two wires of a selected line, and between the two wires of the selected line. The line characteristic signals are transformed to signals indicative of the line identity, line length, type of termination, type and location of equipment connected to the line and existence, approximate location and type of faults along the line. The latter signals are categorized according to selected line condition, and stored in the memory for selective retrieval in response to control signals generated by a user at the user station.
REFERENCES:
patent: 3290586 (1966-12-01), Anderson
patent: 3678379 (1972-07-01), Arvay et al.
patent: 3692961 (1972-09-01), Le Strat et al.
patent: 3808381 (1974-04-01), Jacobs et al.
patent: 3812303 (1974-05-01), Stewart
patent: 3829627 (1974-08-01), Short
patent: 3842218 (1974-10-01), DeLuca et al.
patent: 3891895 (1975-06-01), Wittlinger
patent: 3944914 (1976-03-01), Simmonds
Dynatel Corporation 720, Bulletin No. 7998-0007.
Ashdown Glynn R.
Finder Kenneth A.
Smith Gary R.
Olms Douglas W.
Teradyne, Inc.
LandOfFree
Telephone line test 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 Telephone line test system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telephone line test system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-692610