Cisco 8821

Cisco Wireless IP Phone 8821 and 8821-EX Wireless LAN Deployment Guide
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Real-Time Traffic over Wireless LAN SRND
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/RToWLAN/CCVP_BK_R7805F20_00_rtowlan-srnd.html
Cisco Unified Communications SRND
http://www.cisco.com/c/en/us/support/unified-communications/unified-communications-manager-callmanager/products-
implementation-design-guides-list.html
Cisco Wireless LAN Controller Documentation
http://www.cisco.com/c/en/us/support/wireless/5500-series-wireless-controllers/products-installation-and-configuration-guides-
list.html
Cisco Meraki Wireless LAN Documentation
https://meraki.cisco.com/products/wireless
Cisco Autonomous Access Point Documentation
http://www.cisco.com/c/en/us/td/docs/wireless/access_point/12-4-25d-JA/Configuration/guide/cg_12_4_25d_JA.html