Wi Lan Inc EB02 Benutzerhandbuch
Radio Module Configuration
APR 2001 Rev 03
81
Setting Remote Unit RF Group
The RF Group setting enables you to determine which units in a system can communicate with each other.
For example, in a system consisting of a base station and associated remotes, you can: 1) assign units to
different groups so that only members of the same group can communicate with each other and the base (an
open system); 2) isolate remotes so they cannot talk to other remotes, but can talk only to the base (a closed
system); 3) assign remote units to groups and configure the base station as a repeater (a closed system); and
4) combine closed units with open units in the same system. These configurations are explained below.
For example, in a system consisting of a base station and associated remotes, you can: 1) assign units to
different groups so that only members of the same group can communicate with each other and the base (an
open system); 2) isolate remotes so they cannot talk to other remotes, but can talk only to the base (a closed
system); 3) assign remote units to groups and configure the base station as a repeater (a closed system); and
4) combine closed units with open units in the same system. These configurations are explained below.
Remote units with the same RF group number (RF Group = 1– 63) can communicate directly with each other
and with the base station (if there is a line-of-sight RF path between units and base station Repeater Mode =
off.) An example is a company where the Human Resources department needs direct access to the Payroll
department, but the two departments must be isolated from other departments. Since HR and Payroll are in
the same RF group 14, they can talk directly to each other, but they cannot talk directly to other groups such
as R&D, which belongs to RF Group 20.
and with the base station (if there is a line-of-sight RF path between units and base station Repeater Mode =
off.) An example is a company where the Human Resources department needs direct access to the Payroll
department, but the two departments must be isolated from other departments. Since HR and Payroll are in
the same RF group 14, they can talk directly to each other, but they cannot talk directly to other groups such
as R&D, which belongs to RF Group 20.
Example 1: Open System
Remote units configured as RF Group = 0 are independent, closed units. Closed units cannot talk directly to
each other, they can only talk directly to the base station. This setup acts to isolate remote units and the
associated LANs from each other. Example 2 shows a situation where independent companies are connected
wirelessly to a single base station and communication between the companies is prevented.
each other, they can only talk directly to the base station. This setup acts to isolate remote units and the
associated LANs from each other. Example 2 shows a situation where independent companies are connected
wirelessly to a single base station and communication between the companies is prevented.
Example 2: Closed System
RF Group = 14
Base
Remote
RF Group = 14
Remote
Repeater
Mode = off
Mode = off
RF Group = 20
Remote
RF Group = n
n = 1 – 63
Human Resources
Payroll
R&D
Remote
RF Group = 0
RF Group = 0
Remote
Base
Repeater
Mode = off
Mode = off
Remote
RF Group = 0
RF Group = 0
Company 3
Company 2
Company 1