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文章讨论IP电话与PSTN话音业务互连的基本要求。解决问题的关键在于用于互连的网关,文章以H.323标准为例,分控制平面和用户平面说明所需考虑的主要技术问题。
The article discusses the basic requirements for interconnection of IP telephony and PSTN voice services. The key to solving the problem lies in the gateway used for interconnection. The article takes the H.323 standard as an example, and points out the major technical problems to be considered in the control plane and user plane.