3300 ICP Technician's Handbook
Network Services Units
The Network Services Unit provides connectivity to digital trunks.
There are three variants of the NSUs:
•
Universal NSU
•
R2 NSU
•
BRI NSU
Universal/R2 NSU
Figure 109: Universal NSU – Front Panel
Figure 111: Universal/R2 NSU – Back Panel
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Figure 110: R2 NSU – Front Panel