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1引言随着中国电信3G无线网络用户的发展和各项增值业务的顺利推广,市场对无线VPDN(虚拟拨号专用网络)业务的需求越来越强烈,VPDN业务将会带给用户更方便、更快捷和更安全的无线上网解决方案。
1 Introduction With the development of China Telecom’s 3G wireless network users and the smooth promotion of various value-added services, the market demand for wireless VPDN (Virtual Dial-Private Network) services is getting stronger and stronger, and VPDN services will bring more convenience to users Fast and safer wireless Internet solution.