World Mode (802.11D) - Cisco 8821 Administration Manual

World Mode (802.11d)

• 802.11r: Specifies requirements for fast secure roaming.
• 802.11ac: Uses the radio frequency of 5 GHz for both transmission and receipt of data with speeds up
Table 4: Supported Channels
Band Range
2.412 - 2.472 GHz
5.180 - 5.240 GHz
5.260 - 5.320 GHz
5. 500 - 5.700 GHz
5.745 - 5.825 GHz
Channels 120, 124, 128 are not supported in the Americas, Europe, or Japan, but may be in other regions
Note
around the world.
For information about supported data rates, Tx power and Rx sensitivity for WLANs, see the Cisco Wireless
IP Phone 8821 Series Deployment Guide.
World Mode (802.11d)
The wireless phones use 802.11d to determine the channels and transmit power levels to use. The phone
inherits its client configuration from the associated AP. Enable World mode (802.11d) on the AP to use the
phone in World mode.
Note Enablement of World mode (802.11d) may not be necessary if the frequency is 2.4 GHz and the current
access point is transmitting on a channel from 1 to 11.
Because all countries support these frequencies, you can attempt to scan these channels regardless of World
mode (802.11d) support.
Cisco Wireless IP Phone 8821 and 8821-EX Administration Guide for Cisco Unified Communications Manager
24
The wireless phones have a single antenna and use the Single Input Single Output (SISO)
Note
system, which supports MCS 0 to MCS 7 data rates only (72 Mbps with 20 MHz channels
and 150 Mbps 40 MHz channels). Optionally, you can enable MCS 8 to MCS 15 if
802.11n clients are using MIMO technology that can take advantage of those higher
data rates.
to 433 Mbps.
Available
Channels
13
4
4
11
5
Channel Set
1 - 13
36, 40, 44, 48
52, 56, 60, 64
100 - 140
149, 153, 157, 161, 165
VoIP Networks
Channel Width
20 MHz
20, 40, 80 MHz
20, 40, 80 MHz
20, 40, 80 MHz
20, 40, 80 MHz