NEC Univerge SV8100 Features And Specifications Manual page 799

UNIVERGE SV8100
Power Save Adapter (PSA-L UNIT)
The Power Save Adapter is an add-on module for the IP (DT700) and digital (DT300) multiline
telephones. The PSA-L UNIT allows connection to an analog trunk if the power or system connection
were to fail, or the IP telephone loses connection to the UNIVERGE SV8100 system. No programming is
required on the UNIVERGE SV8100 to support this adapter.
Connecting to an IP Telephone
The Power Save Adapter connects to an analog PSTN (Public Switched Telephone Network) line. For
example, at a small branch office this may be the same line that is used for faxes/modems/etc. The
handset is also connected to the Power Save Adapter – You must unplug the handset from the IP
telephone and reconnect it to the adapter. This allows the speech path to be redirected to the handset
during network power failure.
LAN Connection
The IP telephone has two RJ-45 connections on the back marked PC and LAN. This allows the IP
telephone and a PC to share one cable run and switch port.
If installing an IP telephone at a location that has a PC connected to the data network, one of the
following methods can be used:
Using a different cable:

Leave the PC connected to the LAN.

Patch a switch port to the new cable run.

Connect a CAT 5 straight-through cable from the wall outlet to the LAN port on the IP telephone.

Sharing the existing cable:

Unplug the cable from the PC Network Interface Card (NIC).

Connect the cable to the LAN port on the IP telephone.

Connect a new straight-through patch lead from the PC NIC to the PC port on the IP telephone.

Powering the IP Telephone
Power can be provided to the IP telephone by one of the following methods:
Local Power

The IP telephone has a connector on the back for external power. This is supplied by an AC
adapter that outputs +27VDC requiring a separate power outlet per IP telephone. Loss of power in
the building will prevent the telephones from functioning.
Only use the NEC supplied power supply.

IP Multiline Station (SIP)
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