Specifications

Tools in the Handset 27
Unfortunately, IEEE 802.11 does not provide any procedure for a smooth transition of stations be-
tween APs. Instead, the move is done by deauthenticating the station until it associates to another
AP.
This forced transition will cause a loss of speech frames, and in worst case the call will be discon-
nected.
Tools in the Handset
There are a number of tools present in the handset to assist in verification of a WLAN system de-
ployment. For information on how to use the tools, see User Manual, OpenStage WL3 / Open-
Stage WL3 Plus WLAN Handset.
The basic set of tools includes:
• View with all APs and their corresponding RSSI. Possibility to filter APs based on SSID and/or
channel
• Configurable range beep level
AP Configuration
Regulatory Domains - 802.11d
IEEE 802.11d was developed to support the use of equipment across regulatory domains around
the world without violation of local frequency rules.The 802.11d regulatory domain information is
broadcasted in beacons and contains information on which channels and power levels that are al
-
lowed. Since this capability is broadcasted, no regulatory domain configuration is needed at the
client side.
To ensure that there is no violation of local frequency rules, the recommendation is to enable the
use of 802.11d. At start-up, the handset is listening passively for information about which regula
-
tory domain is present before making any transmissions. This ensures that there is no violation of
local frequency rules.
In the WLAN infrastructure, the AP must have the ability to include the country code information
element in its beacons and probe responses (Support of IEEE 802.11d). If the WLAN infrastructure
does not support the 802.11d information, the handset must be configured manually with regula
-
tory domain information.
Transmission Data Rates
For 2.4 GHz, the option to enable/disable some data rates should not be left to much consider-
ation. As a rule of thumb, all data rates may be enabled. If a transmission fails, the STA will use
the next suitable data rate for the re-transmission. In many cases, the STAs rate fallback algo
-
rithms is based and optimized for the use of all rates.
If 802.11b only clients should not be allowed to associate to the network and the AP does not have
a specific “802.11g clients only” option, this can be accommodated by setting at least one of the
802.11g data rates to “required”.
n-radio
MCS Index Data Rates Mbps 20 MHz Channel
800ns Standard Guard Interval
06.5