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NX-828
HYBRID KEY SYSTEM
1.
Site Requirements
When planning the installation of the
requirements:
Select a location for the Key Service Unit (KSU) that has enough room for installation and
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has adequate lighting.
Select a location that minimises cable lengths. Maximum cable length is 400 meters using
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AWG #24 cable for a keyset and 1 km using AWG #24 cable for a single line telephone.
The equipment should not be exposed to direct sunlight, corrosive fumes, dust, constant
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vibration or strong magnetic fields such as those generated by motors and copying machines.
A direct commercial AC power outlet is required. Do not use extension cords. Preferably,
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a dedicated circuit should be used to minimise the risk of other electrical equipment being
connected that could adversely affect system operation. Ensure that all wires and cables
going to and coming from the KSU are properly routed. Do not cross fluorescent lights or run
parallel with AC wires.
The equipment must be located in an environment that will maintain a temperature range of
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0 - 40 ¡Æ C and a humidity range of 10% - 90% non-condensing.
Do not install in close proximity to a fire sprinkler head or other sources of water.
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Do not install within a 2-mile radius of a broadcasting antenna.
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2. Installation Basic KSU
2.1 Unpacking basic KSU
After unpacking the KSU, inspect for signs of physical damage. If any damage is detected, do not
attempt to install.
Check to see that the KSU carton includes the following items:
- Key Service Unit
- Wall-mount bracket and three (3) screws
- Power cord
2.2 Mounting the KSU
The KSU must be wall-mounted using the bracket supplied (Figure 2-1). The KSU should be
mounted on a plywood backboard at least 1.5 mm thick. Attach the bracket to backboard with the
two screws supplied. Next, hang the KSU on the mounting bracket
NX-828
system, choose a site that meets the following
2 - 1
INSTALLATION
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