Справочник Пользователя для 3e Technologies International Inc. 531AP

Wireless networking uses electromagnetic radio frequency waves to 

transmit and receive data. Communication occurs by establishing radio 

links between the wireless gateway and devices confi gured to be part of 

the WLAN.

The 3e-531AP  incorporates the 802.11b (Wi-Fi) standard and the most 

state of the art encryption for a very powerful and secure wireless envi-

ronment. 

The IEEE 802.11b standard, developed by the Wireless Ethernet 

Compatibility Alliance (WECA), establishes a stable standard. A user with 

an 802.11b product can use any brand of gateway/access point with any 

other brand of client hardware that is built to the 802.11b standard for ba-

sic interconnection. 802.11b devices provide 11 Mbps transmission (with a 

fallback to 5.5, 2 and 1 Mbps depending on signal strength) in the 2.4 GHz 

band. 

802.11b uses DSSS (direct-sequence spread spectrum) for radio com-

munication. Direct-sequence systems communicate by continuously 

transmitting a redundant pattern of bits called a chipping sequence. The 

chipping sequence is combined with a transmitted data stream to produce 

the wireless output signal.

 For wireless devices to communicate with the 3e-531AP, they must 

meet the following conditions:

• The signal strength must be suffi cient;

• The wireless device and wireless gateway must have been confi g-

ured to recognize each other using the SSID (a unique ID assigned 

in setup so that the wireless device is seen to be part of the net-

work by the 3e-531AP);

• Encryption and authentication capabilities and types enabled 

must conform;

• The wireless device and wireless gateway must have compatible 

data rate confi gurations; and

• If MAC fi ltering is used, the 3e-531AP  must be confi gured to 

allow the wireless device’s MAC address to associate (communi-

cate) with the 3e-531AP  wireless interface.