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P0992639 01 Modular ICS Companion Installer Guide
Note: Up to 60 portables can be installed on a Norstar wireless
system. Each portable telephone must be registered to a
DN before it can be used. By default, no Companion
portables are assigned to the DNs.
The range of portable extensions available for wireless
registration is 637 to 696. This means that the digit 6 is
not available as a destination code.
Installing external antennas and lightning surge
arrestors
When installing external antennas and lightning surge
arrestors:
• The antenna should always be mounted vertically. Refer to
the figure Installed antenna and lightning surge arrestor
(USA) on page 37.
• Use #8, 12 mm to 50 mm (
1
/
2
-in. to 2 in.) screws to mount
the antenna bracket and lightning surge arrestor bracket to
the wall.
• Always ensure that the antenna is clear of any adjacent
obstruction, particularly metal. If more than one external
antenna is used at a cell center, space them at least
1 m (40 in.) apart to avoid radio interference problems.
• When running the coaxial cable inside or outside, do not
kink, stretch, or crush the cable. This will seriously affect
its performance. The minimum recommended bending
radius is 200 mm (8 in.).
• The coaxial cable length must not exceed 10 m.
• Use RG-58AU coaxial cables to connect the antennas to
the base stations.