User's Manual

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3.3 Connect Buildings by using Bridges
Wireless point-to-point networks use technologies very similar to wireless
LANs. A radio-based wireless point-to-point network as shown in Figure 3-7 and
Figure 3-8 is currently the most common method for providing connectivity
within a metropolitan area. All of these bridges have to use highly directional
antennas to focus the signal power in a narrow beam, in order to maximizing the
transmission distance. The actual transmission distance of a particular product,
depends on environment conditions and terrain. Rain, for example, causes
resistance to the propagation of radio signals, decreasing the effective range. A
mountainous area will also hamper the transmission range of the signals. Refer to
Chapter 3.2 for determining how to set up the wireless bridge environment.
3.3.1 Point to Point Configuration
In point-to-point configuration, a pair of bridges is set up to communicate only
with each other. In a typical point-to-point application, the bridge acts as a data
channel, providing a wireless link between sites separated by considerable
distances. Actual distance attained depends on the antennas used and their
installation. Both voice and data can be transmitted between sites.
Figure 3-7