VoIP
http://nikkeibp.jp/wcs/leaf/CID/onair/jp/flash_rss/376682
http://japan.cnet.com/news/biz/story/0,2000050156,20083356,00.htm
http://nikkeibp.jp/wcs/leaf/CID/onair/jp/flash_rss/376682
http://japan.cnet.com/news/biz/story/0,2000050156,20083356,00.htm