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    Sonet multiplexer

    Sept. 1, 1995

    Sonet multiplexer

    The DDM-2000 Fiberreach Sonet multiplexer supports DS-0 and DS-1 services. Several multiplexers deployed in a ring-based OC-1 extension from the OC-3 multiplexer bring survivable Sonet services closer to the end user. The device is wall- or rack-mountable or can be deployed in a cabinet in the outside plant.

    AT&T Network Systems

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