Design Guide

Cisco Wireless IP Phone 8821 and 8821-EX Wireless LAN Deployment Guide
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Cisco Autonomous Access Points
When configuring Cisco Autonomous Access Points, use the following guidelines:
Ensure 802.11r (FT) or CCKM is Enabled
Configure the Data Rates as necessary
Enable DTPC
Configure Quality of Service (QoS)
Set the WMM Policy to Required
Ensure Aironet Extensions is Enabled
Disable Public Secure Packet Forwarding (PSPF)
Set IGMP Snooping to Enabled
802.11 Network Settings
It is recommended to have the Cisco Wireless IP Phone 8821 and 8821-EX operate on the 5 GHz band only due to have many
channels available and not as many interferers as the 2.4 GHz band has.
If wanting to use 5 GHz, ensure the 802.11a/n/ac network status is Enabled.