US3816665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operator loop complex
Assignee: Telex Computer Products Inc
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Filing: 1972-09-29
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Granted: 1974-06-11
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Expires: 1992-09-29
Abstract
Abstract An operator loop complex for use in a private automatic branch exchange for connecting any one of a plurality of trunks to any one of a plurality of operator consoles via a switching network comprises a position circuit for each console and a plurality of loop circuits associated with each position circuit whereby each connection to a console is made through a position circuit and one of the loop circuits associated therewith under a common control arrangement which enables only one loop circuit to be connected to a trunk at any one time in response to an operator service request from the trunk and whereafter the loop circuit may remain connected to the trunk while being disconnected from the position circuit.
Inventors
- 👤 S Russell
- 👤 K Gueldenpfenning
- 👤 U Pommerening
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/60; H04Q; H04Q3/00; H04Q3/58; H04Q3/62; H04Q3/625
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
312 words
An operator loop complex for use in a private automatic branch exchange having a plurality of trunks each with a first port for connection to a transmission path from one subscriber and a second port for connection to a transmiSsion path from another subscriber, a switching network through which the trunks may be connected to an operator console, common control means responsive to service requests from the trunks for marking a trunk for connection through the switching network and further responsive to the service requests for generating request signals, each of said plurality of trunks having a trunk circuit means which is actuated for connecting the first and second ports to the switching network and which is deactuated for disconnecting the first and second ports from the switching network and interconnecting the two ports within the trunk, said trunk circuit means being initially actuated when its respective trunk is first marked by the common control means, said operator loop complex comprising: a plurality of loop circuits, each having first and second transmission pairs for connection, respectively, to the first and second ports of a connected trunk; mark enable means responsive to a request signal from the common control means for applying a mark enable signal simultaneously to all of said loop circuits; means for selecting an idle one of said loop circuits; marking means in each of said loop circuits responsive to said selecting means and said mark enable signal for generating a mark signal for connecting the selected loop circuit through the switching network to a marked trunk, and exclude circuit means and a pair of console transmission conductors connected between the operator console and the exclude circuit means and wherein each of said loop circuits includes loop circuit means responsive to an access signal from the operator console for connecting said first and second transmission pairs to said exclude circuit.
Claim 2
Dependent Claim
312 words
An operator loop complex for use in a private automatic branch exchange having a plurality of trunks each with a first port for connection to a transmission path from one subscriber and a second port for connection to a transmiSsion path from another subscriber, a switching network through which the trunks may be connected to an operator console, common control means responsive to service requests from the trunks for marking a trunk for connection through the switching network and further responsive to the service requests for generating request signals, each of said plurality of trunks having a trunk circuit means which is actuated for connecting the first and second ports to the switching network and which is deactuated for disconnecting the first and second ports from the switching network and interconnecting the two ports within the trunk, said trunk circuit means being initially actuated when its respective trunk is first marked by the common control means, said operator loop complex comprising: a plurality of loop circuits, each having first and second transmission pairs for connection, respectively, to the first and second ports of a connected trunk; mark enable means responsive to a request signal from the common control means for applying a mark enable signal simultaneously to all of said loop circuits; means for selecting an idle one of said loop circuits; marking means in each of said loop circuits responsive to said selecting means and said mark enable signal for generating a mark signal for connecting the selected loop circuit through the switching network to a marked trunk, and exclude circuit means and a pair of console transmission conductors connected between the operator console and the exclude circuit means and wherein each of said loop circuits includes loop circuit means responsive to an access signal from the operator console for connecting said first and second transmission pairs to said exclude circuit.
Claim 3
Dependent Claim
55 words
The operator loop complex of claim 1 wherein a loop release signal from the operator causes said loop circuit means to disconnect said first and second transmission pairs from said exclude circuit means and causes said trunk circuit means in a connected trunk to become deactuated thereby permanently disconnecting the trunk from the loop circuit.
Claim 4
Dependent Claim
45 words
The operator loop complex of claim 2 wherein an operator release signal from the operator console is applied to said loop circuit means to connect said first and second transmission paths together and disconnect said first and second transmission pairs from said exclude circuit means.
Claim 5
Dependent Claim
51 words
The operator loop complex of claim 1 wherein each loop circuit includes a port trunk monitor connected to the common control means and switching network for receiving signal indications as to which ports in a connected trunk are connected to subscriber transmission paths and which transmission paths are to distant exchanges.
Claim 6
Dependent Claim
52 words
The operator loop complex of claim 4 wherein said exclude circuit means is responsive to either an operator signal or a signal from said port trunk monitor and the switching network for selectively disconnecting one of said loop circuit trnasmission pairs while mantaining the other one connected to said exclude circuit means.
Claim 7
Dependent Claim
53 words
The operator loop complex of claim 5 wherein each of the trunks is programmed to release the transmission path connected to its first port in response to a signal from the operator and to release the transmission path connected to its second port in response to a different signal received from the operator.
Claim 8
Dependent Claim
65 words
The operator loop complex of claim 6 wherein each of said loop circuits includes loop detection circuit means connected to said first and second transmission pairs for detecting loop transmission paths to the first and second ports of a connected trunk and for generating signals to automatically disconnect the transmission path to a port when the transmission path loop is interrupted for a predetermined period.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |