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ATM(异步转移模式)交换机由于执行了严格的基于连接的流量管理和拥塞控制,能为用户提供良好的QoS(服务质量)保证,在网络部署中得到了广泛应用。但是随着ATM交换机与IP网络互连越来越广泛,如何解决VoIP(互联网协议电话)是ATM交换机设计面临的重要问题。该文以ATM交换机以太网接口互连为例,对ATM交换机如何实现VoIP业务建立、撤销及话音传输等方面,提出了一套完整的设计和实现方案。
The ATM (Asynchronous Transfer Mode) switches provide users with good QoS (Quality of Service) guarantees due to strict connection-based traffic management and congestion control and are widely deployed in network deployments. However, with the interconnection of ATM switches and IP networks becoming more and more widespread, how to solve VoIP (Internet Protocol Telephone) is an important issue facing ATM switch design. This paper takes the ATM switch Ethernet interface interconnection as an example, put forward a complete set of design and implementation scheme on how to set up, cancel and transmit the VoIP service of the ATM switch.