Nowadays the feature of company is getting specialized on complicated economic environment. They are concentrating on improving the efficiency with small scale. It makes new concept (SOHO : Small Office Home Office) for experts of small company and special field. CT-Master is designed to be accomplished maximal efficiency on SOHO application field. Also, it is designed with maximized its scalability to be applied to a small or middle sized companies or enterprisesSo far, It has been difficult to use computer telephony products because they were expensive and complicated and had even unnecessary function. But if you use CT-Master, it is easy for user to find out essential function on SOHO market. It is a stand-alone device like a pizza box so it&＃39;s extremely cheap compared with the way carrying out the function on server.