
US Patent No: 5,243,644
Number of patents in Portfolio can not be more than 2000
Telemetry access arrangement
Stats
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Sep 7, 1993
Issued date -
Aug 31, 1992
filing date -
07/938,740
serial no -
In Force
status
Importance
Abstract
This invention relates to a method and apparatus for accessing customer meters and for controlling customer devices over a telephone line. A suppressed ringing connection is established over a customer line between a central office and customer station equipment. The connection is between a data accessing device such as a meter reading controller and a customer premises device such as a meter interface unit. Signals are exchanged over the connection between these two units without alerting the customer via a ringing signal and without changing the supervisory state of the customer's station equipment from on-hook. The connection can also be used for controlling devices such as air conditioning units, in order, for example, to avoid overloads in a power distribution system. The voice switching network of the central office is used for making the connection between the meter control unit and the meter interface unit. Advantageously, this arrangement can allow a large number of utility meters and controlling devices to be accessed remotely using existing telephone plant.
First Claim
Related Publications
International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM | 4 | 2009 | |
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| 4,646,342 Test trunk access controller | 10 | 1985 | |
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| 4,691,344 Low-powered remote sensor and telephone line transmitter | 41 | 1986 | |
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| 5,189,694 Telemetry access arrangement | 63 | 1990 | |
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| 4,856,047 Automated remote telemetry paging system | 101 | 1987 | |
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| 4,850,010 Telemetry terminal | 28 | 1987 | |
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| 6,594,886 Method of fuse manufacture and a battery pack containing that fuse | 3 | 2001 | |
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| 4,804,957 Utility meter and submetering system | 104 | 1986 | |