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About: Automated main distribution frame     Goto   Sponge   NotDistinct   Permalink

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Automated main distribution frame (AMDF), (automated switching matrix, automated distribution frame, loop management system (LMS)), a technology to provide connectivity between subscriber (local loop, outside plant) – and office equipment (inside plant) lines in a telephone exchange (central office, CO) main distribution frame (MDF). At the beginning of the 21st century the connections (n-subscriber lines and m-office equipment lines) are established or removed manually using a twisted pair of copper wires (jumper).