User's Guide

FreeSpeak Edge | User Guide
For rapid set up you can use the default channels, but in any case you are advised to seek
information about existing 5 GHz traffic in your location. This information can be obtained
from:
l A site frequency coordinator or IT administrator (if there is one)
l A scan of channels in the location using the beltpack
Typically, the default channel setup will work for a small system (4 transceivers or less) in an
environment that has limited equipment competing for the band usage. For a larger system, or
one where there is more 5 GHz traffic, you are advised to take control of transceiver channel
selection yourself. RF channel selection can be changed in the EHXsoftware.
In most countries, 5Ghz channels fall into the following categories:
Channel type Restrictions
ISM (Industrial, scientific and
medical)
These are the channels with the least restrictions and
highest allowance for transmission power. However, they
may be crowded with interference since ISM channels are
equally the first choice for other wireless equipment. Also,
generic ISM channels don’t exist in some countries (for
example. Japan).
TPC (transmit power control)
Transmission power is restricted in these channels. The
maximum power setting for the FreeSpeak Edge system is
below the TPC values.
Indoor Channels
If these channels are used, the equipment may only operate
in an indoor setting. Different countries have different
definitions and requirements for indoor settings.
DFS (dynamic frequency
selection)
Devices operating in this channel are required to
implement a radar detection mechanism and move to a
different channel when radar pulses are detected.
For detailed information refer to: FreeSpeak Edge RF Configuration Guide , available from the
Clear-Com website.
5.1 Radio Frequency (RF) channel selection and power settings
In the first case, channels and transceiver power settings are automatically selected according
to your region's requirements for 5 GHz RF. The transceiver uses two channels and these must
not be adjacent to each other in the coverage zone, so adjacent channels cannot be selected on
the transceiver). For example, you might use channels 36 (Channel 1) and 40 (Channel 2).
These channels are separated by 20 MHz and so are not adjacent.
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