Sch. north of Denver

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CSU.

Last seen on: LA Times Crossword 13 Apr 21, Tuesday

Random information on the term “CSU”:

In telecommunications, a channel service unit (CSU) is a line Bridging device for use with T-carrier that:

CSUs can be categorized by the class of service they support (DS1, DS3, DDS, etc.) and by the capabilities within that class. For example, basic DS1 (T1) CSUs support loopback of each interface and will produce Alarm indication signal to the provider’s NIU (Network Interface Device) in the event of loss of signal from the customer-premises equipment (CPE). More advanced units will include internal monitors of the performance of the carrier in both directions and may have test pattern generation and monitor capabilities.

CSUs are required by PSTN providers at digital interfaces that terminate in a DSU on the customer side. They are not used when the service terminates in a modem, such as the DSL family of service. The maintenance capabilities of the CSU provide important guidance as to whether the provider needs to dispatch a repairman to the customer location.

CSU on Wikipedia