Proxim AP-4000 Benutzerhandbuch

Interfaces

• 802.11g only mode: The radio is optimized to communicate with 802.11g devices. This setting will provide the best 

results if this radio interface will only communicate with 802.11g devices. 

• 802.11b/g mode: This is the default mode. Use this mode if you want to support a mix of 802.11b and 802.11g 

devices.

• 802.11g-wifi mode: The 802.11g-wifi mode has been defined for Wi-Fi testing purposes. It is not recommended for 

use in your wireless network environment.

In general, you should use either 802.11g only mode (if you want to support 802.11g devices only) or 802.11b/g mode to 
support a mix of 802.11b and 802.11g devices. 

If you are using the AP-900 and 4.9 Public Safety mode, you must also select a channel bandwidth. This option is shown 
in 

; it is not available in the AP-4000/4000M. See 

 for a list of channels available with each 

bandwidth.

Super mode improves throughput between the access point and wireless clients that support this capability. For wireless 
clients that support this capability the AP will negotiate and treat them accordingly, for other clients that do not support 
super mode, the AP will treat them as normal wireless clients.

Super mode can be configured only when the wireless operational mode is one of the following:

• 802.11a only mode
• 802.11g only mode
• 802.11b/g mode

Dynamic Turbo mode is supported in 802.11a and 802.11g mode. Dynamic turbo mode supports turbo speeds at twice 
the standard 802.11a/g data rates, and also dynamically switches between turbo mode speeds and normal speeds 
depending on the wireless client. If turbo mode is enabled, then this is displayed in the web UI and the transmit speeds 
and channels pull-down menus are updated with the valid values.

When Turbo mode is enabled, only a subset of the wireless channels on both the 2.4 GHz and 5.0 GHz spectrum can be 
used. If any wireless clients do not support turbo mode, the AP will fall back to normal mode.

Turbo mode can be configured only when Super mode has already been enabled.

Super mode is supported in the 2.4 GHz and 5 GHz frequency bands in all regulatory domains. Turbo mode is available 
in the 5 GHz frequency band in all regulatory domains except for Japan.

The IEEE 802.11d specification allows conforming equipment to operate in more than one regulatory domain over time. 
IEEE 802.11d support allows the AP to broadcast its radio’s regulatory domain information in its beacon and probe 
responses to clients. This allows clients to passively learn what country they are in and only transmit in the allowable 
spectrum. When a client enters a regulatory domain, it passively scans to learn at least one valid channel, i.e., a channel 
upon which it detects IEEE Standard 802.11 frames. 

The beacon frame contains information on the country code, the maximum allowable transmit power, and the channels to 
be used for the regulatory domain. 

The same information is transmitted in probe response frames in response to a client’s probe requests. Once the client 
has acquired the information required to meet the transmit requirements of the regulatory domain, it configures itself for 
operation in the regulatory domain.