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Switching system for readily accessing the service line for test basic unit and the switching system for readily accessing the service line for test expansion unit
Switching system for readily accessing the service line for test basic unit and the switching system for readily accessing the service line for test expansion unit
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机译:易于访问测试基本单元服务线的交换系统和易于访问测试扩展单元服务线的交换系统
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摘要
The switching for readily accessing the service line for test unit is an electromechanical switching arrangement installed at a subscriber location to enable the subscriber to perform simplified tests to determine if telephone troubles being experienced are the fault of the subscribers own equipment and lines, or of the telephone company equipment and lines.
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