Patent US3752940A successfully refreshed from Google Patents.
US3752940A
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US
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Line verification tester
Assignee: North Hills Signal Processing Corp
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Filing: 1972-07-10
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Granted: 1973-08-14
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Expires: 1992-07-10
Abstract
Abstract Card programable line verification tester apparatus iteratively and automatically establishes connections via old and replacement (e.g., ESS) switching apparatus to subscriber loop appearances on a main distributing frame. The assumed continuous tip and ring conduction paths are then tested for faults such as spurious battery, or short, open, high impedance or crossed connections.
Inventors
- 👤 V Santulli
- 👤 W Roumanos
- 👤 G Manos
- 👤 J Gazzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:57
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/22; H04M3/26; H04M3/28; H04M3/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
187 words
In combination in line verification tester apparatus for exercising and testing first telephony switching means and second telephony switching means each connected to like subscriber pair distributing frame means, each of the first and second switching means having tip and ring conductor means connected thereto, said verification tester apparatus being connected by selected ones of the conductor means to each of the first and second switching means, said verification tester apparatus comprising record programmable input means for sequentially reading a plurality of input records each of which includes subscriber numbers for each of the first and second telephony switching means, first register means for receiving and storing said subscriber numbers, means responsive to said subscriber numbers stored in said first register means for signaling the first and second telephony switching means to establish connections to like terminals of the distributing frame means via selected other ones of the conductor means, testing means for testing for continuous and independent tip and ring conductor paths of the conductor means, second register means for storing the results of the operations effected by said testing means, and test result signaling means.
Claim 2
Dependent Claim
187 words
In combination in line verification tester apparatus for exercising and testing first telephony switching means and second telephony switching means each connected to like subscriber pair distributing frame means, each of the first and second switching means having tip and ring conductor means connected thereto, said verification tester apparatus being connected by selected ones of the conductor means to each of the first and second switching means, said verification tester apparatus comprising record programmable input means for sequentially reading a plurality of input records each of which includes subscriber numbers for each of the first and second telephony switching means, first register means for receiving and storing said subscriber numbers, means responsive to said subscriber numbers stored in said first register means for signaling the first and second telephony switching means to establish connections to like terminals of the distributing frame means via selected other ones of the conductor means, testing means for testing for continuous and independent tip and ring conductor paths of the conductor means, second register means for storing the results of the operations effected by said testing means, and test result signaling means.
Claim 3
Dependent Claim
35 words
A combination as in claim 1 wherein said signaling means includes a plurality of automatic dialers, each of said automatic dialers being associated with a selected one of said first and second telephony switching means.
Claim 4
Dependent Claim
58 words
A combination as in claim 2 wherein said signaling means further comprises means for signaling an off hook condition to each of said first and second telephony switching means, means for detecting dial tone issued by each of said first and second telephony switching means, said dial tone detecting means enabling an associated one of said automatic dialers.
Claim 5
Dependent Claim
29 words
A combination as in claim 1 wherein said telephony switching means signaling means comprises time out means for reattempting to signal said switching means a predetermined number of times.
Claim 6
Dependent Claim
28 words
A combination as in claim 4 further comprising counter means connected to said time out means for providing an alarm indication after a predetermined number of said reattempts.
Claim 7
Dependent Claim
27 words
A combination as in claim 1 wherein said testing means comprises detector means for examining a selected pair of the conductor means for a busy signal indication.
Claim 8
Dependent Claim
26 words
A combination as in claim 6 wherein said busy signal detector means comprises means responsive to the incidence of a busy signal for inhibiting further testing.
Claim 9
Dependent Claim
23 words
A combination as in claim 1 wherein said testing means comprises means for examining selected ones of the conductor means for spurious potential.
Claim 10
Dependent Claim
27 words
A combination as in claim 1 wherein said testing means comprises means for examining selected of the tip and ring conductor means for a short circuit therebetween.
Claim 11
Dependent Claim
24 words
A combination as in claim 1 wherein said testing means comprises means for examining assumed completed tip and ring conduction paths for reversal therebetween.
Claim 12
Dependent Claim
21 words
A combination as in claim 1 wherein said testing means comprises means for examining tip and ring conductor paths for continuity.
Claim 13
Dependent Claim
30 words
A combination as in claim 1 wherein said testing means comprises means for examining an assumed continuous path formed by selected ones of the conductor means for a high impedance.
Claim 14
Dependent Claim
64 words
A combination as in claim 1 wherein said testing means comprises means for effecting plural fault tests upon selected ones of the tip and ring conductor means, third register means for storing therein the results of said plural tests effected by said testing means, and means for loading said second register means with the results of said testing stored in said third register means.
Claim 15
Dependent Claim
22 words
A combination as in claim 13 wherein said second register loading means comprises multiplexing means for serially supplying fault recording information thereto.
Claim 16
Dependent Claim
88 words
A combination as in claim 1 wherein said testing means comprises detector means for examining a selected pair of the conductor means for a busy signal indication, means for examining selected ones of the conductor means for spurious potential, means for examining selected ones of the tip and ring conductor means for a short circuit therebetween, means for examining assumed completed tip and ring conductor paths for continuity, and means for examining an assumed continuous path formed by selected ones of the conductor means for a high impedance.
Claim 17
Dependent Claim
40 words
A combination as in claim 1 further comprising logic gating network means for loading information from said input means into said first register means coincident with extracting information from said second register means for communicating said test result signaling means.
Claim 18
Dependent Claim
26 words
A combination as in claim 1 wherein said input means comprises card reader means and plural subscriber record storing cards loaded in said card reader means.
Claim 19
Dependent Claim
15 words
A combination as in claim 17 wherein said test results signaling means comprises printer means.
References Cited (Backward Citations)
US3265820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |