Patent US4384580A successfully refreshed from Google Patents.
US3553384A
Expired / Lapsed
US
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Telephone switching unit with local and remote computer control
Assignee: Individual
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Filing: 1968-04-29
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Granted: 1971-01-05
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Expires: 1988-04-29
Abstract
Abstract A telephone switching system having a switching unit under the control of a local computer and a remote computer, each of said computers including a permanent program store having recorded therein the telephone switching phases for connect, disconnect and identification of the junctors and adapted to send noncyclical control signals to the switching unit, and a multiregister store having a plurality of store areas for temporary storage to record the state of test points, addresses and switching phases in the junctors and adapted to send cyclical test signals to the switching unit. When the local computer is in order, it is it which controls the switching unit. When the local computer is out of order, the switching unit is controlled by the remote computer. A processor is inserted between the switching unit and the remote computer and includes a buffer store for conveying in transit the noncyclical signals from the remote computer to the switching unit and means for generating in the processor proper the test cyclical signals to the switching unit upon reception of specific signals from the remote computer.
Inventors
- 👤 Pierre M Lucas
- 👤 Jacques M Dondoux
- 👤 Jean F Duquesne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:59
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
334 words
A telephone switching system comprising in combination: i. a switching unit including a crosspoint switching network, junctors, a programmer, means for connecting, disconnecting and testing said crosspoints controlled by said programmer, switching unit input and output registers associated with said programmer; ii. a local computer and a remote computer for controlling said switching unit, each including a program store having recorded therein telephone switching operation phases, a multiregister store having a plurality of store areas respectively associated with the junctors and having recorded therein the state of test points in the junctors, the addresses thereof and the telephone switching phase undergone thereby, means for applying noncyclical switching signals to the switching unit programmer and receiving response signals therefrom respectively via the switching unit input and output registers, means for applying cyclical testing and actuating signals to said junctors, means for writing into said multiregister store the testing and actuating result signals and computer input and output registers associated in the local and remote computers with both the program and multiregister stores; and iii. a processor inserted between said switching unit and said remote computer including a buffer store, a multiregister store having a plurality of store areas respectively associated with the junctors and having recorded therein the state of test points in the junctors, the addresses thereof and the telephone switching phase undergone thereby, means for applying cyclical testing and actuating signals to said junctors, means for writing into said multiregister store the testing and actuating result signals, processor input and output registers associated with said processor and respectively connected to the input and output registers of the switching unit and the computers, means for conveying in transit through said buffer store the switching noncyclical signals sent by the remote computer to the switching unit programmer, means for storing in said buffer store specific signals sent by the remote computer to the processor and means for initiating in response to said specific signals the cyclical testing and actuating signal applying means in said processor.
Claim 2
Dependent Claim
334 words
A telephone switching system comprising in combination: i. a switching unit including a crosspoint switching network, junctors, a programmer, means for connecting, disconnecting and testing said crosspoints controlled by said programmer, switching unit input and output registers associated with said programmer; ii. a local computer and a remote computer for controlling said switching unit, each including a program store having recorded therein telephone switching operation phases, a multiregister store having a plurality of store areas respectively associated with the junctors and having recorded therein the state of test points in the junctors, the addresses thereof and the telephone switching phase undergone thereby, means for applying noncyclical switching signals to the switching unit programmer and receiving response signals therefrom respectively via the switching unit input and output registers, means for applying cyclical testing and actuating signals to said junctors, means for writing into said multiregister store the testing and actuating result signals and computer input and output registers associated in the local and remote computers with both the program and multiregister stores; and iii. a processor inserted between said switching unit and said remote computer including a buffer store, a multiregister store having a plurality of store areas respectively associated with the junctors and having recorded therein the state of test points in the junctors, the addresses thereof and the telephone switching phase undergone thereby, means for applying cyclical testing and actuating signals to said junctors, means for writing into said multiregister store the testing and actuating result signals, processor input and output registers associated with said processor and respectively connected to the input and output registers of the switching unit and the computers, means for conveying in transit through said buffer store the switching noncyclical signals sent by the remote computer to the switching unit programmer, means for storing in said buffer store specific signals sent by the remote computer to the processor and means for initiating in response to said specific signals the cyclical testing and actuating signal applying means in said processor.
Claim 3
Dependent Claim
77 words
A telephone switching system as claimed in claim 1, wherein the specific signals sent by the remote computer to the processor and stored in the storing means thereof include a first specific signal initiating the cyclical testing and actuating signal applying means of said processor, and wherein said processor further includes means for transmitting the testing signals and the actuating result signals which are stored in said processor multiregister store in response to said second specific signal.
References Cited (Backward Citations)
US3365548A
Cited
US3403383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |