US4723272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telecommunication system, in particular telephone system
Assignee: US Philips Corp
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Filing: 1985-04-19
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Granted: 1988-02-02
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Expires: 2005-04-19
Abstract
Abstract A telephone communication system comprising a plurality of intercoupled sub-systems each of which comprises a control-unit and at least one peripheral module to which multiple terminals are connected. The control-unit of each sub-system includes destination numbers identifying the terminals within the system, and from the destination number provided by a source terminal determines with which sub-system the destination terminal is associated. When the destination terminal sub-system differs from the source terminal sub-system, signalling information identifying the source terminal is transmitted to the control-unit of the destination terminal sub-system. The control-unit of the destination terminal sub-system then analyzes such information and establishes the connection to the destination terminal therein.
Inventors
- 👤 Jan P. Maat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:43
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/58; H04Q3/62; H04Q3/625; H04Q11/00; H04Q11/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
A telephone communication system comprising a plurality of intercoupled sub-systems, each sub-system comprising a switching network, a control-unit and a peripheral module which can be connected by communication lines to a plurality of source and destination terminals identified by destination numbers; wherein the control-unit of each sub-system includes a list of such destination numbers of all terminals in the entire system and of the sub-systms with which they are associated, and on the basis of a destination number provided by a source terminal connected to a peripheral module in any sub-system the control unit in such sub-system determines with which sub-system the destination terminal is associated; and wherein when the destination terminal sub-system differs from the source terminal sub-system signalling information identifying the source terminal is transmitted from the control unit of the source terminal sub-system to the control-unit of the destination terminal sub-system and connection is made of the source terminal to the destination terminal sub-system, and the control-unit of the destination terminal sub-system analyzes such signalling information and establishes connection to the destination terminal therein.
Claim 2
Dependent Claim
177 words
A telephone communication system comprising a plurality of intercoupled sub-systems, each sub-system comprising a switching network, a control-unit and a peripheral module which can be connected by communication lines to a plurality of source and destination terminals identified by destination numbers; wherein the control-unit of each sub-system includes a list of such destination numbers of all terminals in the entire system and of the sub-systms with which they are associated, and on the basis of a destination number provided by a source terminal connected to a peripheral module in any sub-system the control unit in such sub-system determines with which sub-system the destination terminal is associated; and wherein when the destination terminal sub-system differs from the source terminal sub-system signalling information identifying the source terminal is transmitted from the control unit of the source terminal sub-system to the control-unit of the destination terminal sub-system and connection is made of the source terminal to the destination terminal sub-system, and the control-unit of the destination terminal sub-system analyzes such signalling information and establishes connection to the destination terminal therein.
Claim 3
Dependent Claim
71 words
A system as claimed in claim 1, wherein when the first destination terminal is to be diverted to a new destination terminal by the first destination terminal sub-system, and information identifying such new destination terminal is transmitted by the control unit of the first destination terminal sub-system through the control unit of the source terminal sub-system to the control unit of the subsystem with which the new destination terminal is associated.
Claim 4
Dependent Claim
23 words
A system as claimed in claim 1 wherein the sub-systems are coupled by multiplex lines including at least one channel for transmitting information.
Claim 5
Dependent Claim
27 words
A system as claimed in claim 3, characterized in that said channel is a 64k bit/s common channel signalling channel inside a 2 M bit/s multiplex line.
Claim 6
Dependent Claim
97 words
A process of outgoing call assistance by an operator in a system as claimed in claim 1, such operator being associated with a sub-system other than the source terminal and destination terminal sub-systems, such process consisting of the steps of: making a first connection of the source terminal sub-system to the operator sub-system; making a second connection of the operator sub-system through the source terminal sub-system to the destination terminal sub-system; and, upon response by the destination terminal, completing a connection between the source terminal and the destination terminal by shortcircuiting said connections to the operator sub-system.
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) | 1991-02-01 | 1991-08-03 | 1992-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-01 | 1995-08-03 | 1996-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-01 | 1999-08-03 | 2000-02-02 | $7700.00 | Window Closed / Lapsed |