Shutter, the brand new "Campus New Media Desktop Terminal" just rolled out by Campus Dream Network. Free network phone is only one of its functions, which is called "Quick Contact". After successful registration, users will be given 15 minutes of free calls. It's very simple to operate and the usage tips will be given in the following text. In today's world with relatively scarce free phone services, I believe Shutter will amaze you. Hehe.