Instant WirelessTM Series

•Fragmentation Threshold. This specifies the maximum size a data pack- et will be before splitting and creating a new packet and should remain at its default setting of 2,346. A smaller setting means smaller packets, which will create more packets for each transmission. Only minor modifications of this value are recommended.

•DTIM Interval. This value indicates the interval of the Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and multicast mes- sages. When the Access Point has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Access Point Clients hear the beacons and awaken to receive the broadcast and multicast messages.

•Transmission Rates. The basic transfer rates should be set depending on the speed of your wireless network. You must select 1-2 (MBps) if you have older 802.11 compliant equipment on your network, such as wireless adapters that support only 1 or 2 Mbps. Selecting 1-2 (MBps), however, does not limit the basic transfer rates of faster adapters.

•Preamble Type. The preamble defines the length of the CRC block for communication between the Access Point and a roaming Network Card. (High network traffic areas should use the shorter preamble type.) Select the appropriate preamble type and click the Apply button to set it. All wire- less points (nodes) on your network should use the same preamble type.

•Authentication Type. You may choose between Open System, Shared Key, and Both. The Authentication Type default is set to Open System. Shared Key is when both the sender and the recipient share a secret key. All points on your network must use the same authentication type. It is rec- ommended that you use the default setting.

•Antenna Selection. This selection is for choosing which antenna transmits data. By default, the Diversity Antenna selection, used to increase recep- tion, is chosen.

Wireless Network Access Point

•SSID Broadcast. For security purposes, this selection can be disabled, allowing only those wireless network cards with the Access Point’s SSID to communicate with the Access Point. By default, this selection is enabled, allowing all wireless network cards in your wireless network to communi- cate with the Access Point.

Important: The Access Point will not be recognized by “site-sur- vey” utilities, such as the Microsoft® Windows® XP Zero Configuration Utility, if SSID Broadcast is disabled.

When you’ve completed making any changes on this tab, click the Apply but- ton to save those changes or Cancel to exit the Web-based Utility without sav- ing changes. For more information on this tab, you can click the Help button.