NEC Electra Elite IPK Phone System B64-U20 KSU with two phones

Description

NEC Electra Elite IPK Phone System B64-U20 KSU with InMail 2-Port 8-Hour 750558. Condition is "Used". Shipped with USPS Parcel Select Ground.
Includes two phones, Model  DTR-2DT-1(BK)TEL, but one missing handset.
Five boards, wall mounting plate and bottom cover but missing front cover.
Batteries need replacement but powers up and all boards light up.