NEC Univerge SV8100 System Hardware Manual page 249

4.2 Applying Power to the DT700 Multiline Terminals
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2. Lead the Line and Handset cables through the applicable grooves.
Figure 5-18 Leading Line Cords on a multiline terminal
The DT700 terminals support two different methods to power the terminal:

AC/DC Adapter (Local Supply)
Plug the optional AC/DC Adapter input Jack in the terminal base unit, and
plug the wall plug of the AC/DC Adapter in a standard AC wall outlet.
Ask your Supplier for more details.

In-Line Power/PoE (Power over Ethernet)
In-Line Power (sometimes called Power Over Ethernet) is a LAN
technology that allows standard 10 Base-T/100 Base-TX data cables to
pass electrical current from a power source to a requesting end device.
Installing DT300/DT700 Series (DTL/ITL) Digital and IP Multiline Terminals
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UNIVERGE SV8100