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Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified Communications Manager Release 7.0
OL-15985-01
Chapter 2 Overview of the VoIP Wireless Network
VoIP WLAN Configuration
Wireless Network Requirements for VoIP
When configuring voice over the wireless LAN, use APs that run Cisco IOS Version 12.3(8)JA or later.
Controllers should be running version 4.0 and higher with IOS Version 12.3(8)JX or later.
The Cisco Unified Wireless IP Phone 7921G supports Cisco Aironet APs (APs) that can run Cisco IOS
in autonomous mode and APs that run in lightweight mode with lightweight AP protocol (LWAPP) and
use a Cisco Unified wireless LAN controller.
Table 2-7
lists the supported AP models and operation
mode in the WLAN.
Note
Voice over the wireless LAN (VoWLAN) does not currently support MESH technology such as Cisco
Aironet 1500 Series Lightweight Outdoor Mesh APs.
Note
Be aware that Wi-Fi compliant APs that are manufactured by third-party vendors can function with the
Cisco Unified Wireless IP Phone 7921G, but might not support key features such as Dynamic Transmit
Power Control (DTPC), ARP-caching, LEAP/EAP-FAST, QBSS, U-APSD, 802.11d and 802.11h.
Configuring APs for Voice
This section identifies key AP configuration options that are required for optimal voice performance.
This is not a complete list of configuration steps or options for deploying APs such as the Cisco Aironet
APs. For more information about configuring your AP, refer to the appropriate
Cisco Aironet AP
Installation and Configuration Guide
for your model or the documentation for your AP.
Note
When deploying the Cisco Unified Wireless IP Phone 7921G with the World Regulatory Domain
(CP-7921GW-K9), you must enable the APs for world mode (802.11d). The world model phone gets the
channels and power information from the AP.
To see a list of configuration tasks for the Cisco Aironet AP, controller, and Ethernet switch when setting
up VoIP on the WLAN, see the
“Configuring the Wireless Network” section on page D-1
.
Table 2-7
Supported APs and Modes
AP Models
Autonomous Mode
Lightweight Mode
Cisco Aironet 350 Series AP
Yes
No
Cisco Aironet 500 Series AP
Yes
Yes
Cisco Aironet 1100 Series AP
Yes
Yes
Cisco Aironet 1130 Series AP
Yes
Yes
Cisco Aironet 1200 Series AP
Yes
Yes
Cisco Aironet 1240 Series AP
Yes
Yes
Cisco Aironet 1250 Series AP
Yes
Yes
Cisco Aironet 1300 Series AP
Yes
Yes
Cisco 1000 Series Lightweight AP
No
Yes