CO Fed Quad DS1 over Fiber![]() Available via the ADTRAN OPTI-6100 MSPP or QDFx DS1 over fiber modules for the Total Access 3000 platform. The QDFx series products are optimized for low density (1-4) deployments of DS1 circuits over fiber. The OPTI-6100 provides for much higher densities of DS1 delivery. Products by Line/Family
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