Proxim RangeLAN2 7500, Руководство пользователя

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The Domain is a number between 0 and 15 with 0 being the
default setting.
Channel
default=1
Each Master can select one of 15 Channels to establish commu-
nications with Stations. Each Channel number sets a unique
frequency hopping sequence allowing for multiple subnetworks
with higher data rate transmission capability in the same air
space. You may think of the Channel as a pipe. In order to
communicate, radios must be on the same Channel and there
must be one (and only one) Master that provides the timing for
that Channel.
There are 15 independent Channels designated 1 through 15
with 1 being the default setting. This means that there are 15
different sequences of frequency hops. Each Channel is at a
different frequency at a different time. For networks with
multiple Masters (like in a roaming environment), set each
Master to a different channel for optimum performance. All
Stations will use the same channel as the Master they are syn-
chronized to.
You need only set the Channel on a Master or Alternate Master.
Stations will ignore the parameter if it is set.
Subchannel
default=1
The Subchannel is just a software code that is appended to each
radio packet. It does not affect the frequency hopping sequence
like a Channel does. Use a Subchannel if you need more than
15 Masters in the same coverage area and, therefore, all the
Channels are used.