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Fault decision device and decision manner null of digital common carrier leased line
Fault decision device and decision manner null of digital common carrier leased line
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机译：数字公共载波专线故障决策装置及决策方式无效
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摘要
PROBLEM TO BE SOLVED: To judge a fault occurrence place by discriminating the fault information signal of a data terminal and the network fault information signal of a digital private network which are the same pattern. ;SOLUTION: This device is provided with a terminal fault detection circuit 160 for detecting the consecutive signal of '1' being the fault information signal of the data terminal sent from the data terminal 120 at a transmission side and a terminal fault information changeover circuit 170 for changing over the fault information signal of the data terminal to the terminal fault information signal including one or more pieces of '0' to send to the private network 100 when this fault information signal is detected. Based on the combination of the fault information signal detected at the transmission side and the fault information signal or a terminal fault information signal detected at the receiving side, whether the fault is caused at the data terminal of the transmission side, at the digital private network, or at the both sides.;COPYRIGHT: (C)1997,JPO
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