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Chapter 12 Install Companion or DECT Systems 261
Installation and Maintenance Guide
Install a Companion base station
Before you install wireless equipment, ensure that a site planner determines base station locations
and records the base station information in a provisioning record.
Before you install or move wireless equipment in the United States, check that you have approval
from UTAM Inc.
The United States FCC has appointed UTAM Inc. as the body responsible for coordinating and
verifying the installation or relocation of unlicensed, personal wireless communication devices. To
comply with UTAM Inc., the system uses keys and credits to control user capacity and to ensure
system location verification. You require these software keys and credits to activate Companion
services. You purchase these credits at the time you place the order.
Position the Companion base station
Avoid installing base stations on large concrete or marble columns because these columns affect
radio coverage. If possible, place the base station a minimum of 1 m (40 in.) from these types of
columns. Do not install a base station with the antenna housings near metal objects. Be careful not
to damage existing wiring or panels.
Do not position base stations in ducts, plenums, or hollow spaces used to transport environmental
air except where the duct, plenum or hollow space is created by a suspended ceiling having lay-in
panels. When you need more than one base station in a cell to meet traffic requirements, position
the base stations at the same cell center.
To place all base stations in the same cell center:
• for the USA, a minimum of 54 in. and a maximum of 9 ft. 9 in. distance between the center of
one base station to the center of another
• for Canada, a minimum of 9 cm and a maximum of 1.5 m distance from edge to edge
Position base stations away from office areas or areas with high portable telephone traffic. Table
31 on page 262 shows the minimum distance between office areas and base stations. Install the
base station on the ceiling or high on walls to maintain these minimum distances.
Caution: You must install all base stations within 1230 m (4000 ft., TCM wiring length)
of the Business Communications Manager system or base station module.
To optimize seamless hand off, the difference in TCM wiring length between neighboring
base stations must not exceed 300 m (1,000 ft.).
Warning: Never install base stations in rows.