This integrated services network is built by using many kinds of service performance assurance mechanisms upon a general packet switched network.

这种网络是通过在统一的分组交换网络上实现各种不同的服务性能保证机制来构造的。

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Taking a case study approach to several deployment scenarios, the primary focus is on how ATM, Ethernet, and Frame Relay edge services can be deployed over packet-switched networks.

通过案例研究讲解集中部署方案，重点介绍ATM、以太网和帧中继边缘服务如何能够部署在分组交换网络中。

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For one thing, the genius of the packet-switched network means new VoIP services can reach every user worldwide without any specific infrastructure investment.

FORBES: The Madness of Regulating VoIP as a Public Utility