Allied Telesis AT-WA7400/EU - Manual (Page 149)

AT-WA7400 Management Software User’s Guide
149
The 802.11g and 802.11b channels that are allowed in a given country
may change without notice. Be sure you use only those frequencies
that are permissible in the given country. Note the following:
ˆ FCC countries include the United States, Canada, China, Taiwan,
India, Thailand, Indonesia, Malaysia, Hong Kong, and most South
American countries.
ˆ ETSI countries include all European Union countries except
France. It also includes Switzerland, Iceland, Norway, Czech
Republic, Slovenia, Slovakia, Turkey, Russia, and the United Arab
Emirates.
ˆ France, Mexico, and Singapore use the same channels.
Beacon Interval
Beacon frames are transmitted by an access point at regular intervals
to announce the existence of the wireless network. The default
behavior is to send a beacon frame once every 100 milliseconds (or 10
per second).
The Beacon Interval value is set in milliseconds. Enter a value from 20
to 2000.
DTIM Period
The Delivery Traffic Information Map (
DTIM ) message is an element
included in some beacon frames. It indicates which client stations,
currently sleeping in low-power mode, have data buffered on the
access point awaiting pick-up.
The DTIM period you specify here indicates how often the clients
served by this access point should check for buffered data still on the
access point awaiting pickup.
Specify a DTIM period within the range (1 - 255).
The measurement is in beacons. For example, if you set this to 1,
clients check for buffered data on the access point at every beacon. If
9 2452 2452 2452
10 2457 2457 2457 2457
11 2462 2462 2462 (default) 2462
12 2467 2467 2467
13 2472 2472 2472
14 2484
Table 5. Worldwide Frequencies for 802.11g and 802.11b Radios
Channel FCC ETSI France Japan Israel