Installation manual
ESI Communications Servers Hardware Installation Manual External connections
I.11
A Digital Cordless Handset base station requires only a line cord to the phone system; AC power isn’t
needed because the base station receives power from the phone system via the line cord.
An IP Cordless Handset base station receives PoE. If PoE
isn’t already being supplied, you’ll need to install the
separately purchased PoE adapter (sold in five-packs
as ESI part # 5000-0437). The diagram at right shows the
necessary connections.
Note: If the PoE equipment plugs into AC outlets
and a power failure occurs, all IP Cordless
Handsets on the system will be unable to
originate or receive phone calls. Therefore,
either: (a.) use an appropriately sized
uninterruptible power supply (UPS) to
power all the IP equipment (base station,
PoE adapter, router, etc.) involved in
making phone calls or (b.) have a
traditional POTS (“plain old telephone
service”) phone available for originating
and receiving analog CO calls.
Once the base stations are installed and the Cordless Handsets charged:
• Cordless Handset II — The Cordless Handset II will auto-seek an available channel.
• Original Cordless Handset — Change each Handset’s channel by pressing its CH key. Each Handset
should have its own channel. There are 30 available channels on the small Cordless Handset and 10
on the large Cordless Handset.
Note: Feedback may result if the Cordless Handset is within three inches of an ESI desktop phone.
ESI Cordless Handset II Repeater
The optional ESI Cordless Handset II Repeater extends the coverage area of the ESI Cordless Handset II in
all directions, including up and down.
If Repeaters are installed so their coverage area overlaps that of the base station, the base station can hand
off calls to the Repeaters as the user moves from one coverage area to another. When it’s connected to a
Repeater, the ESI Cordless Handset II operates exactly as it does when connected to its base station, and
the handoff from the base station to the Repeater occurs seamlessly without disturbing the end user, even
during an active call.
Each ESI Cordless Handset II base station supports up to six repeaters, regardless of configuration.
• Each Repeater supports up to two direct connections to other Repeaters.
• No Repeater can be more than three connections — or hops — from the base station.
All Repeaters, regardless of configuration, must be registered to the base station.
Repeaters that are registered directly to a base
station (left), do not require use of the optional
Repeater Configurator Kit. These Repeaters
can be installed using automatic configuration.
However, Repeaters registered to the base
station through another Repeater (one
example shown, right) do require use of the
Repeater Configurator Kit.
For detailed information on installing Repeaters, refer to the ESI Cordless Handset II
Repeater Installation Manual (ESI # 0450-1248).










