Transmission line monitoring system
First Claim
1. A transmission line monitoring system for monitoring the quality of a transmission line along which a plurality of repeaters are equipped, comprising:
- a monitoring line, equipped along said transmission line, for transmitting a signal for collecting information on the quality of said transmission line;
a centralized monitoring unit for collecting information on the quality of said transmission line through said monitoring line;
a plurality of monitoring units, respectively provided corresponding to said plurality of repeaters;
each of said monitoring units comprising,a communicating means for communicating with said centralized monitoring unit,a test signal sending means for sending a test signal through a section of said transmission line which is to be tested, when its own monitoring unit corresponds to a repeater which is instructed by said centralized monitoring unit as a beginning of said section,a test signal receiving means for receiving and detecting a test signal through said section when its own monitoring unit corresponds to a repeater which is instructed by said centralized monitoring unit as an end of said section, anda controlling means for detecting an instruction which is sent from said centralized monitoring unit through said monitoring line and said communicating means, and which includes information on a section of said transmission line which is to be tested, and for controlling said operation of sending said test signal and an operation of sending information on the quality of said section through said communicating means and said monitoring line to said centralized monitoring unit; and
said centralized monitoring unit sends an instruction which includes information on a section of said transmission line which is to be tested, through said monitoring line, and receives said information on the quality of said section of said transmission line, which is sent from a monitoring unit responding to said instruction through said monitoring line.
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Accused Products
Abstract
A transmission line monitoring system for monitoring the quality of a transmission line along which a plurality of repeaters are equipped. A monitoring line is equipped along the transmission line for transmitting a signal for collecting information on the quality of the above transmission line. A plurality of monitoring units are respectively provided corresponding to the above plurality of repeaters. A centralized monitoring unit sends an instruction which includes information on a section of the transmission line which is to be tested, through the monitoring line, and receives the above information on the quality of the above section of the transmission line, which is sent from a monitoring unit responding to the above instruction through the above monitoring line. Each of the monitoring units receives the above instruction through the communicating circuit, and determines whether or not its own monitoring unit corresponds to a repeater at the beginning or the end of the section, by the control circuit. A test signal is sent through the section, when its own unit is determined as the above beginning, and a test signal is received and detected through the above section when its own unit is determined as the above end. The result of the detection of the test signal through the section is sent through the monitoring line to the centralized monitoring unit as the information on the quality of the section.
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Citations
28 Claims
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1. A transmission line monitoring system for monitoring the quality of a transmission line along which a plurality of repeaters are equipped, comprising:
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a monitoring line, equipped along said transmission line, for transmitting a signal for collecting information on the quality of said transmission line; a centralized monitoring unit for collecting information on the quality of said transmission line through said monitoring line; a plurality of monitoring units, respectively provided corresponding to said plurality of repeaters; each of said monitoring units comprising, a communicating means for communicating with said centralized monitoring unit, a test signal sending means for sending a test signal through a section of said transmission line which is to be tested, when its own monitoring unit corresponds to a repeater which is instructed by said centralized monitoring unit as a beginning of said section, a test signal receiving means for receiving and detecting a test signal through said section when its own monitoring unit corresponds to a repeater which is instructed by said centralized monitoring unit as an end of said section, and a controlling means for detecting an instruction which is sent from said centralized monitoring unit through said monitoring line and said communicating means, and which includes information on a section of said transmission line which is to be tested, and for controlling said operation of sending said test signal and an operation of sending information on the quality of said section through said communicating means and said monitoring line to said centralized monitoring unit; and said centralized monitoring unit sends an instruction which includes information on a section of said transmission line which is to be tested, through said monitoring line, and receives said information on the quality of said section of said transmission line, which is sent from a monitoring unit responding to said instruction through said monitoring line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A transmission line monitoring system for monitoring the quality of a plurality of transmission lines along which a plurality of repeaters are equipped, comprising:
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a monitoring line, equipped along said transmission lines, for transmitting a signal for collecting information on the quality of said transmission lines; a centralized monitoring unit for collecting information on the quality of said transmission lines through said monitoring line; a plurality of monitoring units, respectively provided corresponding to said plurality of repeaters; each of said monitoring units comprises, a communicating means for communicating with said centralized monitoring unit, a test signal sending means for sending a test signal through a section of one of said transmission lines which is to be tested, when its own monitoring unit corresponds to a repeater which is instructed by said centralized monitoring unit as a beginning of said section, a test signal receiving means for receiving and detecting a test signal through said section when its own monitoring unit corresponds to a repeater which is instructed by said centralized monitoring unit as an end of said section, a first switch for connecting said test signal sending means with a beginning point of said section; a second switch for connecting said test signal receiving means with an end point of said section, and a controlling means for detecting an instruction which is sent from said centralized monitoring unit through said monitoring line and said communicating means, and which includes information on a section of one of said transmission lines which is to be tested, and for controlling said connecting operations of said first and second switches and an operation of sending information on the quality of said section through said communicating means and said monitoring line to said centralized monitoring unit; and said centralized monitoring unit sends an instruction which includes information on a section of one of said transmission lines which is to be tested, through said monitoring lines, and receives said information on the quality of said section, which is sent from a monitoring unit responding to said instruction through said monitoring line. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification