Network Interface Unit. It is the box that is the endpoint of the Telco network. It is from there you connect your router or external CSU/DSU for a T1 connection, among others.
CNTHOMP is correct. This network interface unit ( NIU )
is at the farend. there are several types of NIU's however
they all function the same. Note: you can have a point-to-point T1 and have a NIU at both ends Jeter@LasVegas.com
J.Fisher CCNA
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