Wireless networks are a cheap, easy and secure way to create office networks, and Trinet can provide you with all the help you need to get set up.
Wireless networks have several advantages over traditional wired LANs:
Wireless LAN networks are secure with 128bit WEP encryption there is no need to fear un-authorised access to your network and can integrate into existing wired LANs.
How does a Wireless LAN work?
Currently there are two main standards of wireless LAN 802.11b(11Mbs) and 802.11g(56Mbs) however for ease of topic we shall be focusing on the 802.11b standard.
Devices on a wireless LAN (WLAN) communicate to each other and to machines on a wired LAN through a Wireless Access Point (WAP). In the example below there are two WAPs located on two different sites (these may well be in different buildings on a large site). It would not be possible to link the PC's in site B with just one WAP because of the range of the transmitter, however a wireless bridge be used to form a seam less link.
Site A

Site B

The range of the signal is greatly dependent on the environment. In ideal circumstances a WLAN has a radius of 500m; however obstacles in the way of the signal will reduce the WLAN's range.
| Material | Level of Signal Loss | Example |
|---|---|---|
| Wood | Low | Door, Office Partition |
| Glass | Low | Non-Tinted Windows / Tinted Windows |
| Marble / Bricks | Medium | Walls, Buildings |
| EMI | High | Microwave Ovens, Arc Welders |
| Metal / Paper | High | Warehouse, cars, Roll or Stack of Paper stocks |
With good planning most of these issues can be avoided with good planning.
Wireless Channels
Wireless networks operate around 2.4GHz. This is then split into 11 channels each covering 11MHz. You will notice that some of the channels overlap, so it is important to perform a site survey so that the optimal channels can be selected.
