Figure 7-40 Hfu-U(Bk)/(Wh) Unit - NEC Electra Elite 192 Hardware Manual

Issue 6
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Figure 7-39 Connecting DBM(B)-U10 to ESI Port
3.8 HFU-U(BK)/(WH) Unit (Handsfree Unit)
The Handsfree Unit provides full-duplex handsfree communication.
Large areas may cause poor full-duplex operation. This unit comes
with the handsfree adapter and an external microphone. With
terminal upside down, facing from the bottom of the open cover,
install this unit in Telephone Slot 1.
3.8.1 Installing an HFU-U(BK)/(WH) Unit on any DTP/DTU
Multiline
DTP-16HC-1(BK)
Refer to
Multiline Terminal except DTP-2DT-1(WH) and DTP-
16HC-1(BK)
the same.

Figure 7-40 HFU-U(BK)/(WH) Unit

Terminal except
3.4.1 Installing an APR-U Unit on any DTP/DTU
The instructions for installing these units are
Installing Optional Equipment
Electra Elite
DTP-2DT-1(WH) and