【摘要】 主要介绍基于中等带宽网络的语音通讯的原理、关键技术和实现方法 ,给出了一般的开发过程和具体开发实例。重点介绍自定义的 IP电话信令系统的原理和实现过程更多还原

【Abstract】 This paper chiefly introduces the principle, the key technology and the implementation of IP phone based on midbandwidth network or LAN, also gives general methodical development procedure and a detail programming instance The most important part is the principle and design of a custom-defined calling system更多还原