3Com WL-560 - Manual (Page 39)

Using the Configuration Management System 33
Manually Select
Radio Channels
On the Advanced Wireless Network page, you can manually select the
radio channels and radio modes. The Bridge only looks for a best SSID
that matches the specified radio mode on the specified channels.
Antenna Selection Select an antenna for the radio signal:
■ Internal — this default setting should be used in most
circumstances.
■ External and one internal antenna — this setting
automatically determines which antenna is best for sending
packets to individually attached clients. Choose this setting
if the Bridge is located in a place that is surrounded or
hindered by metal paths or walls.
Data Preamble To increase performance, click Short (Enhanced performance).
When equipment that does not support short preamble is also
being used, click Long (Wi-Fi Interoperable).
Note: The Data Preamble option is available in ad-hoc mode
only. However, the Short Data Preamble option is not available
for 802.11a and 802.11a Turbo modes in ad-hoc mode.
Table 11 Wireless Network Page (continued)