The 8400-Series Voice Terminals Instructions for Installation, Switch,
Administration, and Programming the Options
555-015-725
Issue 1
October 1996
Installing Your Voice Terminal
Page 3-5
Wiring Information
3
Auxiliary Power
In both a 4-wire or 2-wire configuration, most of the 8400-Series voice terminals
are phantom powered from the PBX. However, you will need auxiliary power in
the following instances:
■
If you are using an 8411 or 8434DX voice terminal
NOTE:
You must use auxiliary power with these sets.
■
If you have an 801A Expansion Module connected to an 8434DX voice
terminal (This expansion module can ONLY be used with the 8434DX
connected to a DEFINITY® Communications System G3V3.3 or later
switch.)
NOTE:
If an 8434DX voice terminal with attached adjunct equipment is
connected to an expansion module, it should be locally powered by
an MSP-1. If this configuration is closet powered by an 1145A, two
ports must be used. A KS-22911 L2 cannot be used in this situation.
■
If there is attached adjunct equipment, such as an S201A Speakerphone,
to any of the 8400-Series voice terminals
For a list of possible auxiliary power supplies, see “Auxiliary Power Supplies for
the 8400-Series Voice Terminals” in Chapter 2: Checklist of Parts (with PECs
and Comcodes) in this manual.
Distance Limitations
In 4-wire operation, the voice terminal must be within 5,000 feet of the PBX using
22-gauge or 24-gauge wire, and within 4,000 feet of the PBX using 26-gauge
wire.
In 2-wire operation, the voice terminal must be within 5,500 feet (1676.4 meters)
of the PBX using 22-gauge wire, within 3,500 feet (1066.8 meters) of the PBX
using 24-gauge wire, and within 2,200 feet (670.56 meters) of the PBX using
26-gauge wire.
The adjunct power supply must be no more than 250 feet from the voice terminal.
