Network interface device: Difference between revisions

Revision as of 13:59, 7 September 2005

Revision as of 14:01, 7 September 2005

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[[Image:Network Interface Unit.jpg|thumb|300px|right|Two NIUs for T-1 circuits installed to the right of a [[66 block]]]]

In [[telecommunication|telecommunications]], the term '''network interface device''' ('''NID''',) is interchangable with '''network interface unit''') is interchangable with ('''NIU''', '''network interface unit''') and has the following meanings:

*'''NIU'''/'''NID'''s serve as the point of demarcation between the local exchange carrier network and the customer's premise. NIDs are required at the MPOE (minimum point of entry) which is typically in the basement, first floor telco room, garage, or even outside the building. NIUs are multi-functional devices, which include a protector block to prevent high-voltage surges from affecting premise equipment and inside wiring. It also usually allows the carrier to initiate a loop-test back from the central office to test the integrity of the local loop.