Specifications

Cisco Unified Wireless IP Phone 7921G Series Deployment Guide 112
http://www.cisco.com/en/US/products/ps6366/products_installation_and_configuration_guides_list.html
Autonomous Access Point Documentation
http://www.cisco.com/en/US/products/ps6521/products_installation_and_configuration_guides_list.html
Open Source License Notices for the Cisco Unified IP Phones 7900 Series
http://www.cisco.com/en/US/products/hw/phones/ps379/products_licensing_information_listing.html