IP电话也称为 Vo IP(Voice over IP,基于 IP协议的语音通信 ) ,是一种计算机与电信技术相结合的产物。目前这种 IP电话没有完全脱离公用电话网 ,它是一种窄带与宽带的混网。作者意在建立一种基于局域网的 IP电话 ,充分利用电台的网络资源 ,节省资金。本文介绍了利用局域网实现 IP网络电话通信的可行性、局域网 IP电话的设计思想 ,并且利用 JBuild6进行 Java语言软件开发 ,初步实现了两台 PC机之间的语音通信 ,并对其未来的发展作了思路上的探讨 IP Telephony, also known as Vo IP (Voice over IP), is a product of a combination of computer and telecommunications technologies. The current IP phone is not completely separated from the public telephone network, it is a narrowband and broadband mixed network. The author intends to establish a kind of IP telephone based on LAN, make full use of radio network resources, save money. This article describes the use of local area network to achieve the feasibility of IP telephony, LAN IP telephony design ideas, and the use of JBuild6 Java language software development, the initial realization of the two PC voice communications, and its future development The thinking of the discussion