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ＩＰ电话与传统电话相比，具有节省带宽、信道利用率高等优点，同时ＩＰ电话的实现涉及许多关键技术。文中主要讨论了ＩＰ电话在实用中需要解决的话音压缩编码技术以及话音信号的延时问题。
Compared with the traditional telephone, the IP telephone has the advantages of bandwidth saving and high channel utilization, and the realization of the IP telephone involves many key technologies. This paper mainly discusses the voice compression coding technology and voice signal delay problems that IP phones need to solve in practice.