| 摘要 |
The network monitoring system for an integrated wire broadcast is provided by a characteristic that a matching equipment having a first RF MODEM part and a state monitoring module having a second RF MODEM part in each of plural terminals on a line are equipped in a broadcasting station; and the first and second RF MODEM parts are the RF MODEM parts for changing the frequency by a phase-locked loop(PLL) frequency synthesizing method and communicating mutually by the changed frequency value, whereby heightening a reliability of a monitoring system by changing a communication frequency through a remote control method when a communication error occurs on a line.
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