P-870HN-5
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b Support Notes
All contents copyright (c) 2009 ZyXEL Communications Corporation.
Wireless FAQ
What is a Wireless LAN?
Wireless LANs provide all the functionality of wired LANs, without the need for
physical connections (wires). Data is modulated onto a radio frequency carrier and
transmitted through the ether. Typical bit-rates are 11Mbps and 54Mbps, although in
practice data throughput is half of this. Wireless LANs can be formed simply by
equipping PC's with wireless NICs. If connectivity to a wired LAN is required an
Access Point (AP) is used as a bridging device. AP's are typically located close to the
centre of the wireless client population.
What are the advantages of Wireless LANs?
a. Mobility:
Wireless LAN systems can provide LAN users with access to real-time information
anywhere in their organization. This mobility supports productivity and service
opportunities not possible with wired networks.
b. Installation Speed and Simplicity:
Installing a wireless LAN system can be fast and easy and can eliminate the need to
pull cable through walls and ceilings.
c. Installation Flexibility:
Wireless technology allows the network to go where wire cannot go.
d. Reduced Cost-of-Ownership:
While the initial investment required for wireless LAN hardware can be higher than
the cost of wired LAN hardware, overall installation expenses and life-cycle costs can
be significantly lower. Long-term cost benefits are greatest in dynamic environments
requiring frequent moves and changes.
e. Scalability:
Wireless LAN systems can be configured in a variety of topologies to meet the needs
of specific applications and installations. Configurations are easily changed and range
from peer-to-peer networks suitable for a small number of users to full infrastructure
