ZyXEL Communications 320W User Manual

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P320W Support Notes 
 
 
 
All contents copyright (c) 2005 ZyXEL Communications Corporation.   
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What are potential factors that may causes interference among WLAN products?   
Factors of interference: 
1. Obstacles: walls, ceilings, furniture… etc. 
2. Building Materials: metal door, aluminum studs. 
3. Electrical devices: microwaves, monitors, electric motors. 
Solution : 
1.Minimizing the number of walls and ceilings 
2.Antenna is positioned for best reception 
3.Keep WLAN products away from electrical devices, eg: microwaves, monitors, electric motors,…, etc. 
4. Add additional APs if necessary.   
What's the difference between a WLAN and a WWAN? 
WLANs are generally privately owned, wireless systems that are deployed in a corporation, warehouse, 
hospital, or educational campus setting. Data rates are high and there are no per-packet charges for data 
transmission. 
WWANs are generally publicly shared data networks designed to provide coverage in metropolitan areas 
and along traffic corridors. WWANs are owned by a service provider or carrier. Data rates are low and 
charges are based on usage. Specialized applications are characteristically designed around short, burst 
messaging.   
What is Ad Hoc mode? 
A wireless network consists of a number of stations without access points. Without using an access point 
or any connection to a wired network. 
What is Infrastructure mode? 
Infrastructure mode implies connectivity to a wired communications infrastructure.   If such connectivity 
is required the Access Points must be used to connect to the wired LAN backbone. Wireless clients have 
their configurations set for "infrastructure mode" in order to utilize access points relaying.   
How many Access Points are required in a given area? 
This depends on the surrounding terrain, the diameter of the client population, and the number of clients. 
If an area is large with dispersed pockets of populations then extension points can be used for extend 
coverage.