WFM:Workforce Management
http://itpro.nikkeibp.co.jp/article/Keyword/20071001/283358/
伝送路 - Wikipedia
http://ja.wikipedia.org/wiki/%E4%BC%9D%E9%80%81%E8%B7%AF
Cisco4503
http://www.cisco.com/web/JP/product/hs/switches/cat4500/chassis/C4503.html
PoE
http://e-words.jp/w/PoE.html
http://ja.wikipedia.org/wiki/Power_over_Ethernet