A Digital Distribution Frame (DDF) is a passive, rack-mounted platform for terminating, organizing, and cross-connecting digital coaxial cables (typically E1/T1) between multiplexers, switches, and transmission equipment. Simply put. A distribution frame is a physical part of the network that acts as a passive cable termination. This is where cables are punched down and it consists of patch panels and punch-down blocks. Distribution frames are the central concentrator for the cabling system, for example, cables that come from. HC-M106A DDF Digital Distribution Frame The HC-A DDF digital distribution frame is installed in machine rooms as a distribution center between multiplex digital equipment or between digital multiplex equipment and program controlled exchange devices.
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