System Installation Manual
Digital Key Telephone System
22
DV
3. Equipment Requirement:
3.1 Preparation:
Survey the capacity of system and telephone.
Survey the wiring and terminals.
Carefully study and follow this manual before installation.
3.2 Environment Requirement:
Input Voltage
：
AC110~240V
System Power Back-up Battery
：
Connect with DC24V power source to the battery
back-up interface to ensure a continuous supply of power during a power failure.
3.3 Cable Requirement
：
CO Line
：
2 wires
Key
Telephone
：
2 wires
SLT
：
2 wires
Door
Phone
：
2 wires
Relay Switch / Sensor
：
2 wires
External Paging / External music
：
2 wires
3.4 Notice:
The main unit should be installed in a clean, dry, dust-free and secure location. Place at
least 10cm above the ground to avoid vibration.
Install in a well ventilated environment and away from direct sunlight.
Install main unit in the center position of the extensions to shorten the distance between
main unit and extensions.
The power supply must be independent from the others. And keep away from high
frequency sources and noise to avoid interference from EMI.
Aristel Networks Pty Ltd
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