作者: David J. Luneau
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摘要: Systems and methods are described for measuring the quality of telephone transmission lines. A device, such as a loop test apparatus, can be located at customer's premises used remotely diagnosing line impairments, especially concerning local customer wiring. Such device is valuable determining if suitable new services, DSL. The apparatus incorporate an integrated loopback feature that controlled from testing server (LTS) at, e.g., Central Office. terminate based on message sent by LTS. will then reflect signals transmitted LTS back to so characteristics wiring analyzed, without need dispatch company service equipment and/or personnel premises.