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Outside plant

In telecommunication, the term outside plant has the following meanings:

1. In telephony, all cables, conduits, ducts, poles, towers, repeaters, repeater huts, and other equipment located between a demarcation point in a switching facility and a demarcation point in another switching facility or customer premises.

Note: The demarcation point may be at a distribution frame[?], cable head, or microwave transmitter.

2. In DOD communications, the portion of intrabase communications equipment between the main distribution frame (MDF) and a user end instrument or the terminal connection for a user instrument.

Source: from Federal Standard 1037C and from MIL-STD-188

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