US3562435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching system with automated main distributing frame
Assignee: AT&T Inc
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Filing: 1968-12-27
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Granted: 1971-02-09
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Expires: 1988-12-27
Abstract
Abstract A telephone system comprising conventional station apparatus (outside plant) and associated conductors and conventional central office equipment (inside plant) and associated conductors is provided with a main distributing frame switching network upon which the outside plant conductors and inside plant conductors are terminated. Control circuitry is provided including a memory which is responsive to signals from a teletypewriter for selectively interconnecting the outside plant conductors with the inside plant conductors by exclusive linkage paths. The switching network is rearrangeable, and circuitry is provided to detect the idle or active state of all conductors and to inhibit the execution of network interconnection commands during the active state of any affected conductor. In another aspect of the disclosure, a junctor circuit is associated with the inside plant and outside plant side of the main distributing frame switching network and is controllable from a test desk so as to provide access selectively to a station circuit or to a central office circuit, or in the alternative, to provide simultaneous access to both circuits via serial insertion of the junctor circuit therebetween.
Inventors
- 👤 Amos E Joel Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:22
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
101 words
In a communication system having a switching network for completing communication paths the combination comprising: a plurality of outside plant conductors, a plurality of inside plant conductors, selectively operable signaling means, and a rearrangeable switching network comprising; control means enabled in response to signals from said selectively operable means for interconnecting selected said outside plant conductors with selected said inside plant conductors via exclusive linkage paths, and means responsive to further said signals for releasing certain said exclusive linkage paths and for reconnecting certain of said selected outside plant conductors via other exclusive linkage paths to other said inside plant conductors.
Claim 2
Dependent Claim
101 words
In a communication system having a switching network for completing communication paths the combination comprising: a plurality of outside plant conductors, a plurality of inside plant conductors, selectively operable signaling means, and a rearrangeable switching network comprising; control means enabled in response to signals from said selectively operable means for interconnecting selected said outside plant conductors with selected said inside plant conductors via exclusive linkage paths, and means responsive to further said signals for releasing certain said exclusive linkage paths and for reconnecting certain of said selected outside plant conductors via other exclusive linkage paths to other said inside plant conductors.
Claim 3
Dependent Claim
51 words
In a telephone system, the combination set forth in claim 1 further comprising: means for detecting a predetermined state of said certain linkage paths; and means controlled by said detecting means for delaying the enabling of said releasing means during the said predetermined state of any of said certain linkage paths.
Claim 4
Dependent Claim
26 words
In a communication system, the combination set forth in claim 1 wherein said selectively operable signaling means comprises a teletypewriter operatively associated with said control means.
Claim 5
Dependent Claim
129 words
In a communication system having a plurality of first switching networks for completing communication paths, the combination comprising: selectively operable signaling means; a plurality of other switching networks each comprising outside plant conductor terminals and inside plant conductor terminals and wherein each said other network is associated with one of said first networks; control means enabled in response to signals from said selectively operable means for interconnecting selected said outside plant terminals with selected said inside plant terminals via exclusive linkage paths through a selected one of said other networks, and means responsive to further said signals for releasing certain said exclusive linkage paths and for reconnecting certain of said selected outside plant terminals via other exclusive linkage paths to other said inside plant terminals through said one network.
Claim 6
Dependent Claim
129 words
In a communication system having a plurality of first switching networks for completing communication paths, the combination comprising: selectively operable signaling means; a plurality of other switching networks each comprising outside plant conductor terminals and inside plant conductor terminals and wherein each said other network is associated with one of said first networks; control means enabled in response to signals from said selectively operable means for interconnecting selected said outside plant terminals with selected said inside plant terminals via exclusive linkage paths through a selected one of said other networks, and means responsive to further said signals for releasing certain said exclusive linkage paths and for reconnecting certain of said selected outside plant terminals via other exclusive linkage paths to other said inside plant terminals through said one network.
Claim 7
Dependent Claim
51 words
In a communication system, the combination set forth in claim 4 further comprising: means for detecting a predetermined state of said certain linkage paths; and means controlled by said detecting means for delaying the enabling of said releasing means during the said predetermined state of any of said certain linkage paths.
Claim 8
Dependent Claim
114 words
In a telephone system: a plurality of station circuits, a plurality of switching circuits, a teletypewriter, and a rearrangeable switching network comprising: control means enabled in response to signals from said teletypewriter for interconnecting selected said station circuits with selected said switching circuits via exclusive linkage paths; means responsive to further signals from said teletypewriter for releasing said exclusive linkage paths and for reconnecting certain of said station circuits and said switching circuits via other exclusive linkage paths; means for detecting the idle or active state of said linkage paths; and means controlled by said detecting means for delaying the enabling of said releasing means during the active state of any said linkage paths.
Claim 9
Dependent Claim
114 words
In a telephone system: a plurality of station circuits, a plurality of switching circuits, a teletypewriter, and a rearrangeable switching network comprising: control means enabled in response to signals from said teletypewriter for interconnecting selected said station circuits with selected said switching circuits via exclusive linkage paths; means responsive to further signals from said teletypewriter for releasing said exclusive linkage paths and for reconnecting certain of said station circuits and said switching circuits via other exclusive linkage paths; means for detecting the idle or active state of said linkage paths; and means controlled by said detecting means for delaying the enabling of said releasing means during the active state of any said linkage paths.
Claim 10
Dependent Claim
82 words
In a telephone system, a rearrangeable main distributing frame switching network comprising input and output appearances and linkage paths for interconnecting said input and output appearances in selected permutations; a plurality of station circuits each connected to individual said input appearances; a plurality of central office circuits each connected to individual said output appearances; means independent of said station circuits for generating coded data representative of a first said permutation; and means controlled by said generating means for enabling said switching network.
Claim 11
Dependent Claim
82 words
In a telephone system, a rearrangeable main distributing frame switching network comprising input and output appearances and linkage paths for interconnecting said input and output appearances in selected permutations; a plurality of station circuits each connected to individual said input appearances; a plurality of central office circuits each connected to individual said output appearances; means independent of said station circuits for generating coded data representative of a first said permutation; and means controlled by said generating means for enabling said switching network.
Claim 12
Dependent Claim
59 words
In a telephone system, the combination set forth in claim 7 further comprising: means for storing said first permutation; means responsive to generation of further coded data for modifying said stored permutation; and means responsive to the enabling of said modifying means and controlled by said storage means for enabling said linkage paths in accordance with Another said permutation.
Claim 13
Dependent Claim
64 words
In a telephone system, the combination set s forth in claim 8 wherein said first permutation is identified by coded data comprising: a series of characters of the form :X0, X1, X2, X3, . . . XN. and wherein said further coded data comprises a series of characters of the form XY wherein Y represents the value to which X is to be changed.
Claim 14
Dependent Claim
102 words
A telephone central office comprising a plurality of stations and a switching network for completing telephone communication paths: a rearrangeable main distributing frame switching network serially inserted between said stations and said network each comprising input and output appearances and linkage paths for interconnecting said input and output appears appearances in selected permutations; means independent of said stations for generating coded data representative of a first said permutation; means for storing said coded data; means controlled by said storage means for enabling said switching network; and means responsive to a a predetermined state of said linkage paths for inhibiting said enabling means.
Claim 15
Dependent Claim
102 words
A telephone central office comprising a plurality of stations and a switching network for completing telephone communication paths: a rearrangeable main distributing frame switching network serially inserted between said stations and said network each comprising input and output appearances and linkage paths for interconnecting said input and output appears appearances in selected permutations; means independent of said stations for generating coded data representative of a first said permutation; means for storing said coded data; means controlled by said storage means for enabling said switching network; and means responsive to a a predetermined state of said linkage paths for inhibiting said enabling means.
Claim 16
Dependent Claim
41 words
The combination set forth in claim 10 further comprising: means for registering further said data; means controlled by said registering means for modifying said stored data; and means responsive to the enabling of said modifying means for reenabling said enabling means.
Claim 17
Dependent Claim
184 words
In a telephone system a plurality of stations, a plurality of trunks a first switching network comprising: a plurality of line circuit input appearances; a plurality of trunk circuit input appearances; means for interconnecting any said line circuit output appearance with any said trunk input appearance; and a second switching network interposed between said stations and said first switching network comprising: a plurality of station appearances, a plurality of line circuit input appearances, selectively operable means for generating control signals for identifying a station appearance and a line circuit input appearance which are to be interconnected by said network, means responsive to control signals from said selectively operable means for interconnecting any one said station appearance with any one line circuit input appearance via a first unique linkage path, means automatically responsive to further control signals from said selectively operable means for interchanging said first linkage path with another said linkage path, memory means operable to store information indicating the idle or active state of any said station appearance, and means controlled by said memory means for delaying the enabling of said interchanging means.
Claim 18
Dependent Claim
184 words
In a telephone system a plurality of stations, a plurality of trunks a first switching network comprising: a plurality of line circuit input appearances; a plurality of trunk circuit input appearances; means for interconnecting any said line circuit output appearance with any said trunk input appearance; and a second switching network interposed between said stations and said first switching network comprising: a plurality of station appearances, a plurality of line circuit input appearances, selectively operable means for generating control signals for identifying a station appearance and a line circuit input appearance which are to be interconnected by said network, means responsive to control signals from said selectively operable means for interconnecting any one said station appearance with any one line circuit input appearance via a first unique linkage path, means automatically responsive to further control signals from said selectively operable means for interchanging said first linkage path with another said linkage path, memory means operable to store information indicating the idle or active state of any said station appearance, and means controlled by said memory means for delaying the enabling of said interchanging means.
Claim 19
Dependent Claim
106 words
In a telephone system: a rearrangeable main distributing frame switching network comprising input appearances and output appearances and means for interconnecting said input and output appearances in selected permutations via exclusive linkage paths; a plurality of station circuits each connected to individual said input appearances; a plurality of central office circuits each connected to individual said output appearances; junctor means having a first terminal connected to one of said input appearances and a second terminal connected to one of said output appearances, test means; and supervisory means operatively associated with said junctor means comprising selectively operable means for connecting either said terminal to said test means.
Claim 20
Dependent Claim
106 words
In a telephone system: a rearrangeable main distributing frame switching network comprising input appearances and output appearances and means for interconnecting said input and output appearances in selected permutations via exclusive linkage paths; a plurality of station circuits each connected to individual said input appearances; a plurality of central office circuits each connected to individual said output appearances; junctor means having a first terminal connected to one of said input appearances and a second terminal connected to one of said output appearances, test means; and supervisory means operatively associated with said junctor means comprising selectively operable means for connecting either said terminal to said test means.
Claim 21
Dependent Claim
26 words
The combination set forth in claim 13 wherein said supervisory means further comprises means for connecting said testing means serially between said first and second terminals.
Claim 22
Dependent Claim
46 words
The combination set forth in claim 13 wherein said supervisory means further comprises: selectively operable means for generating signals identifying a selected permutation in said switching network; and means responsive to the enabling of said generating means for implementing said selected permutation in said switching network.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |