Seven Du
Consultant, Writer, and Software Engineer in Yantai China
Coder, developer, also works as a system administrator. VoIP fan, created FreeSWITCH-CN .
He writes Blogs. He also has a Linked in profile.
He written a book FreeSWITCH the Definitive Guide in Chinese.
He is working on a Start-up x-y-t.com .