Allied Telesis AT-TQ2403 用户手册

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AT-TQ2403 - Management Software - User's Guide 

You can enable or disable IEEE 802.11d Regulatory Domain Support to broadcast the access point 
country code information as described below. 

Enabling support for IEEE 802.11d on the access point causes the AP to broadcast 

which country it is operating in as a part of its beacons: 

  To enable 802.11d regulatory domain support, click Enabled. 

  To disable 802.11d regulatory domain support, click Disabled. 

Note: The IEEE 802.11d defines standard rules for the operation of IEEE 802.11 

wireless LANs in any country without re-configuration. IEEE 802.11d allows client 
stations to operate in any country without re-configuration. The AT-TQ2403 

Management Software must be configured by the Manufacturer via the command 

line interface (CLI) country codes for operation in a particular country. 

Country Domain  Select the country where this device locates.  

Note: This item will not appear when AT-TQ2403 is sold to specific regions, 

hence you can not configure this item.  

 

The Administration UI will show whether IEEE 802.11h regulatory domain control is in 

effect on the AP. IEEE 802.11h cannot be disabled by an end user Administrator. The 

following details are provided for informational purposes only. 

IEEE 802.11h is a standard that provides two services required to satisfy certain 

regulatory domains for the 5GHz band. These two services are Transmit Power Control 

(TPC) and Dynamic Frequency Selection (DFS). 

  TPC requires that Radio Local Area Networks (RLANs) operating in the 5 GHz band 

use transmitter power control. This involves adhering to a regulatory maximum 

transmit output power and a mitigation requirement for each permitted channel. The 

result of which is the reduced interference with satellite services. 

  DFS requires that RLANs operating in the 5 GHz band implement a mechanism to 

avoid co-channel operation with radar systems and ensure uniform utilization of any 

available channels. 

Note: 802.11h is automatically enabled if the AP is configured to work in any country 

that requires 802.11h as a minimum standard. This standard is currently only required by 

those countries which fall into the European Telecommunications Standard Institute 

(ETSI) category. 802.11h is also enabled for Japan. 

 

There are a number of key points for the AP Developer that should be remembered in relation to the 

IEEE 802.11h standard: 

  802.11h only works for the 802.11a band. It is not required for 802.11b, nor 802.11g