Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1976-12-28
1978-09-05
Olms, Douglas W.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 83D, 324103P, H04B 346
Patent
active
041122640
ABSTRACT:
A testing and switching (tester) system is disclosed for information transmission and communications networks and systems and the like. According to a preferred embodiment, a data transmission network is advantageously of the type in which remotely located users or customers are afforded time-shared access to a centrally located computer. The data transmission network includes remotely located switching stations which are linked to the central computer over data transmission lines which include selectively actuated normal and fallback local loops. The network users gain access to the centrally located computer over selectively actuated local lines to the remotely located switching stations. The tester system comprises switching and testing apparatus which includes a programmable tester computer located at the remotely located stations and preferably at the centrally located computer site also. The tester computer is programmable from the centrally located computer site and is preferably under command control of the centrally located computer site. The tester system tests, including programmed and manual tests, network data transmission parameters at sites having switching and testing apparatus, and also performs programmed and manually controlled switching at those sites. The tester system is especially suited to testing and switching in a telephone data transmission network in which the data transmission lines are typically leased data transmission long lines and in which the selectively actuated local lines to the remotely located stations are part of the telephone company DDD network. Access to the remotely located stations by the centrally located computer site is also gained over selectively actuated lines which advantageously form part of the DDD network. The tester system advantageously tests and measures voice and data transmission parameters including signal level, phase jitter, and noise. Methods and apparatus are also disclosed for performing these tests.
REFERENCES:
patent: 3582780 (1971-06-01), Hole
patent: 3705275 (1972-12-01), Leyburn et al.
patent: 3764903 (1973-10-01), Griswold
patent: 3822367 (1974-07-01), Humphrey
patent: 3895294 (1975-07-01), Vinding
patent: 3965418 (1976-06-01), Bauer et al.
patent: 3973197 (1976-08-01), Meyer
patent: 3980839 (1976-09-01), Hutcheson
patent: 4029913 (1977-06-01), Gunderson
"Automatic Transmission Measurements on Central Office Trunks" in Automatic Electric Technical Journal by Brown et al., Jan. 1970, pp. 2-12.
The Bell System Tech. Journal, Jul. 1960, pp. 911-925, by Cochran et al., "A New Measuring Set for Message Circuit Noise".
Abramson Carl N.
Kohl David
Ogen Thomas
Bowne Time Sharing, Inc.
Olms Douglas W.
LandOfFree
Testing and switching system including remotely controllable sta does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Testing and switching system including remotely controllable sta, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing and switching system including remotely controllable sta will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2098098