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当今Ｉｎｔｅｒｎｅｔ在不断地改变着自己的位置，网络的“比特流”所代表的内容已从原来单纯的数据不断向多媒体演变。网络中信息流量在不断地增长，而基于Ｉｎｔｅｒｎｅｔ的各种业务也在飞速发展，ＩＰ电话就是其中之多家公司为了提供性能更好的传输网络，适应日益激烈的商?
Today’s Internet is constantly changing its position, the network represented by the “bit stream” has been from the original simple data to the multimedia evolution. The information flow in the network is constantly increasing, and various businesses based on the Internet are also developing rapidly. IP telephony is one of many companies. In order to provide a better transmission network and adapt to the increasingly fierce business?