Dell PowerConnect W-IAP92 Dell Instant 6.2.0.0-3.2.0.0 User Guide - Page 43

Chapter 4 Wireless Network In a Wireless LAN (WLAN), laptops, desktops, PDAs, and other computer peripherals are connected to each other without any network cables. These network elements or clients use radio signals to communicate with each other. Wireless networks are set up based on the IEEE 802.11 standards. The IEEE 802.11 is a set of standards that are categorized based on the radio wave frequency and the data transfer rate. For more information about the IEEE 802.11 standards, see Table 4. Table 4 - IEEE 802.11 Standards IEEE Network Standard 802.11a Frequency Used (in GHz) 5.0 Maximum Data Transfer Rate (in Mbps) 54 802.11b 2.4 11 802.11g 2.4 54 802.11n 2.4 or 5.0 300 During start up, a wireless client searches for radio signals or beacon frames that originate from the nearest W-IAP. After locating the W-IAP, the following transactions take place between the client and the W-IAP: 1. Authentication- The W-IAP communicates with a RADIUS server to validate or authenticate the client. 2. Connection- After successful authentication, the client establishes a connection with the WIAP. Network Types Dell W-Instant wireless networks are categorized as: l "Employee Network" on page 44 l "Voice Network" on page 53 l "Guest Network" on page 60 NOTE: When a client is associated to the Voice network, all data traffic is marked and placed into the high priority queue in QoS (Quality of Service). QoS refers to the capability of a network to provide better service to selected network traffic over various technologies. Dell PowerConnect W-Series Instant Access Point 6.2.0.0-3.2.0.0 | User Guide 43 | Wireless Network