| 摘要 |
PURPOSE: A method of controlling a time switch is provided to control the time switch existing between an originating terminal and a receiving terminal, for failure testing on a call path, so as to form a loop relating to a preset call. CONSTITUTION: An output of the first resource is connected to be an input of the first resource through a time switch(10). The output of the first resource is connected to be an input of the second resource through the time switch(10). The first test data is generated by the connection. An output of the second resource is connected to be an input of the second resource through the time switch(10), and the output of the second resource is connected to be an input of the first resource, to generate the second test data. A call failure location is decided by using the first and the second test data.
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