The real problem with VOIP is that it means that the telephonesystem is now going to be as secure as the Internet.
VOIP(因特网声传协议)的真正问题在于,电话系统的安全性现在正变得和互联网一样。
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In the end, the thesis gives the design of secure IP telephonesystem, which can authenticate and authorize through RADIUS, transfer data safely through the secrecy IP phone.