Specifications

Cisco Unified Wireless IP Phone 7921G Series Deployment Guide 11
World Mode (802.11d)
If using the Cisco Unified Wireless IP Phone 7921G World (-W) model, then it is required to enable 802.11d. The Cisco
Unified Wireless IP Phone 7921G gives precedence to 802.11d to determine the channels and transmit powers to use and
inherits its client configuration from the associated access point.
Enable World Mode (802.11d) for the corresponding country where the access point is located.
If 802.11d information is not available from the access point, then the phone uses the locally configured regulatory domain. If
the Cisco Unified Wireless IP Phone 7921G -A, -E or -P model is taken to another country, where the access point uses a
different regulatory domain, then 802.11d will be required for the Cisco Unified Wireless IP Phone 7921G to operate
successfully.
When using 802.11a, enable 802.11d to discover which channels can potentially be used in the network. Specifically, for
802.11h support, the phone passively scans some of the 5 GHz channels (DFS) first before actively scanning any network
channels.
If using 2.4 GHz (802.11b/g) and 802.11d is not enabled, then the Cisco Unified IP Phone 7921G can attempt to use channels 1-
11 and reduced transmit power.
Note: World Mode is enabled automatically for the Cisco Unified Wireless LAN Controller.
World Mode must be enabled manually for Cisco Autonomous Access Points using the following commands:
Interface dot11radio X
world-mode dot11d country US both
Supported Countries
Below are the countries and their 802.11d codes that are supported by the Cisco Unified Wireless IP Phone 7921G.
Argentina (AR)
India (IN)
Poland (PL)
Australia (AU)
Indonesia (ID)
Portugal (PT)
Austria (AT)
Ireland (IE)
Puerto Rico (PR)
Belgium (BE)
Israel (IL)
Romania (RO)
Brazil (BR)
Italy (IT)
Russian Federation (RU)
Bulgaria (BG)
Japan (JP)
Saudi Arabia (SA)
Canada (CA)
Korea (KR / KP)
Singapore (SG)
Chile (CL)
Latvia (LV)
Slovakia (SK)
Colombia (CO)
Liechtenstein (LI)
Slovenia (SI)
Costa Rica (CR)
Lithuania (LT)
South Africa (ZA)
Cyprus (CY)
Luxembourg (LU)
Spain (ES)
Czech Republic (CZ)
Malaysia (MY)
Sweden (SE)
Denmark (DK)
Malta (MT)
Switzerland (CH)
Estonia (EE)
Mexico (MX)
Taiwan (TW)
Finland (FI)
Monaco (MC)
Thailand (TH)
France (FR)
Netherlands (NL)
Turkey (TR)