Cisco IP Phone 8821
http://www.cisco.com/web/JP/product/hs/iptel/ipp8800/8821/index.html
Cisco IP Phone 8821-EX
http://www.cisco.com/web/JP/product/hs/iptel/ipp8800/8821-ex/index.html
Cisco Wireless IP Phone 8821 データシート
http://www.cisco.com/c/ja_jp/products/collateral/collaboration-endpoints/wireless-ip-phone-8821/datasheet-c78-737346.html
http://www.cisco.com/c/ja_jp/products/collateral/collaboration-endpoints/wireless-ip-phone-8821/datasheet-c78-737346.pdf
Cisco Wireless IP Phone 8821-EX
http://www.cisco.com/c/ja_jp/products/collateral/collaboration-endpoints/wireless-ip-phone-8821-ex/datasheet-c78-737347.html
http://www.cisco.com/c/ja_jp/products/collateral/collaboration-endpoints/wireless-ip-phone-8821-ex/datasheet-c78-737347.pdf