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US3636243A
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Long-distance communication dial exchange installation with central control
Assignee: Siemens AG
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Filing: 1969-06-09
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Granted: 1972-01-18
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Expires: 1989-06-09
Abstract
Abstract A long-distance communication teletype dial exchange installation wherein the establishment of the connection is centrally controlled. A plurality of line grouping units or exchange installations (GE), each having a through-connection network (WN), connection establishment systems, and a control unit, the lines of the plurality of grouping units being connected thereto in even distribution, are provided. Each control unit, operating independent from the control units of other exchanges, is operative to connect through the lines assigned to it over multiple lines (VL) between the throughconnection networks and all receiving lines of every other exchange. At least one coordinating circuit (K) prevents the multiple seizure of outgoing lines and determines the succession sequence during testing for the seizure state of receiver lines by several simultaneously requesting control units.
Inventors
- 👤 Alfred Bachner
- 👤 Karl Schneider
- 👤 Martin Ertel
- 👤 Erika Schraml
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:22
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/50; H04Q; H04Q3/00; H04Q3/0008; H04Q3/0012; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
A long distance communication teletypewriter dial exchange installation wherein the establishment of a connection is centrally controlled comprising: a plurality of line grouping units (GE), each having a throughconnection network (WN), connection establishment systems, and a control unit, the lines of the plurality of grouping units being connected thereto in even distribution, each control unit, operating independent from the control units of other grouping units, being operative to connect through the lines assigned to it over multiple lines (VL) between the through-connection networks and all receiving lines of every other grouping unit, and at least one coordinating circuit (K) to prevent the multiple seizure of outgoing lines and determine the succession sequence during testing for the seizure state of receiver lines by several simultaneously requesting control units.
Claim 2
Dependent Claim
127 words
A long distance communication teletypewriter dial exchange installation wherein the establishment of a connection is centrally controlled comprising: a plurality of line grouping units (GE), each having a throughconnection network (WN), connection establishment systems, and a control unit, the lines of the plurality of grouping units being connected thereto in even distribution, each control unit, operating independent from the control units of other grouping units, being operative to connect through the lines assigned to it over multiple lines (VL) between the through-connection networks and all receiving lines of every other grouping unit, and at least one coordinating circuit (K) to prevent the multiple seizure of outgoing lines and determine the succession sequence during testing for the seizure state of receiver lines by several simultaneously requesting control units.
Claim 3
Dependent Claim
63 words
A long distance installation as recited in claim 1 wherein, the through-connection networks comprise switching matrices, coupling stages having coupling multiples connected with the receiver lines being sufficient in number such that the number of coupling points per coupling multiple is increased by the factor n, when there are n grouping units, the corresponding outputs of the switching matrices being connected over multiple-lines.
Claim 4
Dependent Claim
74 words
A long distance installation as recited in claim 1 wherein, the through-connection networks comprise switching matrices, the coupling multiples of the coupling stages of the coupling groups of each switching matrix directly connected to the lines being sufficient so that the number of coupling points per coupling multiple is increased by the factor n, where n is the number of grouping units, the corresponding connections of the switching matrices being connected over multiple lines.
Claim 5
Dependent Claim
75 words
A long distance installation as recited in claim 1 wherein n lines of the same group, where n is the number of connected grouping units, which in each case are connected to different grouping units (GE), are combined into a line group, means in a control unit for testing the line group with regard to its state of seizure, the line group being reported free if at least one of the n lInes is free.
Claim 6
Dependent Claim
43 words
A long distance communication installation as recited in claim 3 wherein the coordinating circuit includes means for causing a time spacing of the testing processes of different controls for the path setting, when the controls simultaneously scan lines leading in the same direction.
Claim 7
Dependent Claim
43 words
A long distance communication installation as recited in claim 4 wherein the coordinating circuit includes means for causing a time spacing of the testing processes of different controls on a receiver line, if the controls simultaneously scan a line group with n lines.
Claim 8
Dependent Claim
56 words
A long distance installation as recited in claim 1 wherein each said control unit includes a path setting means (St13, St23) and further comprising: means in said coordinating circuit for controlling said path setting means so that simultaneous attempts at testing receiver lines for their state of seizure will be caused to occur in time succession.
Claim 9
Dependent Claim
54 words
A long distance installation as recited in claim 1 wherein each said control unit includes a path setting means (St13, St23) and further comprising: means in said coordinating circuit for controlling said path setting means so that simultaneous attempts at testing coupling groups of grouping units will be caused to occur in time succession.
Claim 10
Dependent Claim
42 words
A long distance installation as recited in claim 1 wherein a control for path setting effects a new through-connection to another outgoing line if the outgoing line selected by it has been seized by another control during the program of path through-connection.
Claim 11
Dependent Claim
169 words
A long distance installation as recited in claim 3 wherein the coordinating circuit (K) comprises for n connected setting means (St13, St23) a first finder (S3) with n inputs and n outputs for the selection of one among several simultaneously requesting setting means, and n further finders (S1, or S2), each of which is assigned to a setting means St13 or St23). the further finders each having an associated coincidence gate (G1, G2), the inputs of the latter being connected to an output of the first finder and an output thereof being connected to the thereto pertaining setting means (St13, St23). the further finders (S1, S2), each also having n outputs (1, 2), of which that first tested in each case in a finding process (1) is connected with an output of the coupling multiple (KV11, KV22) assigned to the corresponding one of the further finders (S1, S2) and that tested (2) in the kth place (k 2) being connected with an output of the kth enlargement (KVA12, KVA21).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |