NEC Central Office Interface Unit
- (Model# COI(8)-U10 ETU Stock# 750160)
- The NEC COI(8)-U10 ETU Card is a central office interface unit that supports 8 outside (CO/PBX) lines. The outside lines can be a combination of Loop Start or Ground Start DTMF trunks.
- Compatible with NEC Elite 48/192 and NEC IPK/IPK2 phone systems.
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