AT&T MERLIN 820 User Manual

Basic Trouble Tests
Step 2.
Determine if you have an auxiliary power unit or a voice terminal power
supply.
IF
THEN
You have an auxiliary power unit,
Go on to “HOW TO SELECT THE
CORRECT PROCEDURE.”
You do NOT have an auxiliary
See note below.
power unit,
You have a voice terminal power Go on to Step 3.
supply,
You do NOT have a voice terminal
Go on to “HOW TO SELECT THE
power supply,
CORRECT PROCEDURE.”
Note:
An auxiliary power unit may be required in cases where the con-
trol unit must handle extreme work loads. An extreme load may
exist when you have a combination of the following: the maximum
number of voice terminals for your system, several voice terminal
accessories, long wiring runs between the control unit and the
voice terminals, and most of the voice terminals are being used at
the same time. If the light indicators on some of the voice termi-
nals become dim or go out altogether during periods of heavy use,
it could mean that an auxiliary power unit is required for normal
operation. To determine if you need an auxiliary power unit,
disconnect your voice terminals and accessories in your system
until the number of terminals, hands-free units and headset
adapters is no more than twenty. Then perform the action that
caused the trouble. If the trouble is no longer present, you need an
auxiliary power supply.
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AT&T MERLIN 820 Specifications

General

Brand	AT&T
Model	MERLIN 820
Category	Conference System
Language	English