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COVID-19:作为一家重要的电信解决方案供应商,EXFO在将员工健康和安全作为首要任务的前提下,保持全面运营。

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Channel Service Unit (CSU)

A network device that receives and transmits signals to and from the wide-area-network (WAN) line. The CSU performs loopback testing of signals from the phone company and provides a barrier for electrical interference from either side of the unit (customer premises or phone company).

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