Intermediate distribution frame

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Intermediate distribution frame (IDF): In a central office or customer premises, a frame that (a) cross-connects the user cable media to individual user line circuits and (b) may serve as a distribution point for multipair cables from the main distribution frame (MDF) or combined distribution frame (CDF) to individual cables connected to equipment in areas remote from these frames. IDFs, as they are called in the industry, can hold devices of different types including, but not limited to, backup systems (Hard Drives or other media as self-contained or as Raid Arrays, CD-ROM, etc.

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