MultiVoice Gateway for the MAX— User’s Guide
Preliminary November 10, 1998
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Important safety instructions
The following safety instructions apply to the MultiVoice Gateway:
1
Product installation should be performed by trained service personnel only.
2
Read and follow all warning notices and instructions marked on the product and included
in the manual.
3
The maximum recommended ambient temperature for MultiVoice Gateway models is
104° Fahrenheit (40° Celsius). Take care to allow sufficient air circulation or space
between units when the MultiVoice Gateway is installed in a closed or multirack
assembly, because the operating ambient temperature of the rack environment might be
greater than room ambient.
4
Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation
of the product and to protect it from overheating, these slots and openings must not be
blocked or covered.
5
Installation of the MultiVoice Gateway in a rack without sufficient air flow can be unsafe.
6
If the unit is installed in a rack, the rack should safely support the combined weight of all
equipment it supports. A fully loaded redundant-power MultiVoice Gateway weighs 56
lbs (25.5 kg). A fully loaded single-power MultiVoice Gateway weighs 30 lbs (13.6 kg).
7
The connections and equipment that supply power to the MultiVoice Gateway should be
capable of operating safely with the maximum power requirements of the MultiVoice
Gateway. In the event of a power overload, the supply circuits and supply wiring should
not become hazardous. The input rating of the MultiVoice Gateway is printed on its
nameplate.
8
Models with ac power inputs are intended for use with a three-wire grounding type
plug—a plug that has a grounding pin. This is a safety feature. Equipment grounding is
vital to ensure safe operation. Do not defeat the purpose of the grounding type plug by
modifying the plug or using an adapter.
9
Before installation, use an outlet tester or a voltmeter to check the ac receptacle for the
presence of earth ground. If the receptacle is not properly grounded, the installation must
not continue until a qualified electrician has corrected the problem. Similarly, in the case
of DC input power, check the DC ground(s).
10 If a three-wire grounding type power source is not available, consult a qualified electrician
to determine another method of grounding the equipment.
11 Models with DC power inputs must be connected to an earth ground through the terminal
block Earth/Chassis Ground connectors. This is a safety feature. Equipment grounding is
vital to ensure safe operation.
12 Before installing wires to the MultiVoice Gateway unit’s DC power terminal block, verify
that these wires are not connected to any power source. Installing live wires (that is, wires
connected to a power source) is hazardous.
13 If using DC power, connect the equipment to a 48 VDC supply source that is electrically
isolated from the ac source. The 48 VDC source should be reliably connected to earth
ground.
14 Install only in restricted-access areas in accordance with Articles 110-16, 110-17, and
110-18 of the National Electrical Code, ANSI/NFPA 70.
15 Do not allow anything to rest on the power cord, and do not locate the product where
persons will walk on the power cord.