对于远程测试多媒体网络的需求进行了详尽的分析，提出了一种利用IP分组交换网建立虚拟专用网络的网络模型。
After a detailed analysis of multi-media network on remote satellite tests, a virtual special multi-media network model using IP exchange nets was proposed.
提供核心交换机的冗余，虚拟专用网的接入与各种服务器的安装、配置。
The redundancy provided the core switch, installation, configuration and access server virtual private network.
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