摘要
日本SETA株式会社的IP-PBX是基于SIP(Session Initial Protocol)的IP电话交换系统,除具有基本通话功能外,还具有呼叫保留等常用的电话功能。笔者在开发此IP-PBX的过程中,发现了不同类型SIP电话终端之间关于呼叫保留等常用的电话功能互不兼容的问题,在分析了IP-PBX呼叫保留等常用电话功能及各种类型的SIP电话终端的特性后,提出了SIP及其扩展的协议相结合的方法,实现了不同类型SIP电话终端之间的呼叫保留、呼叫组内通话驻留等功能。
IP-PBX from SETA Company in Japan which is an IP phone switch system based on SIP (Session Initial Protocol), has realized functions of call hold and call park. Kinds ofincompatible problems concerning SIP phone on their hold functions exist, such as call hold while developing this IP-PBX. The characteristic of kinds of SIP phone is analyzed. A new solution is proposed through combining both SIP and its extended protocol, which is also realized functions of call hold and call park on kinds of SIP phone successfully.
出处
《信息与电脑（理论版）》
2009年第12期27-28,31,共3页
China Computer & Communication
