局域网IP电话系统

LAN IP Telephony System

局域网IP电话系统是在基于以太网技术的局域网上传输IP话音的系统。局域网IP电话系统不仅能传输话音，而且能提供多种智能服务，完全可以取代传统的专用小交换机（PBX）系统。如果把IP电话在骨干网（如Internet）上的应用和IP电话在局域网上的应用结合起来，将会使IP电话的应用更为完善，并能在骨干网和局域网上同时体现IP电话的优点。介绍了局域网IP电话系统中的网络、话机、关守、PSTN接入设备等组件所使用的技术及其功能。

LAN IP telephony system provides IP voiceapplication in the Ethernet LAN. LAN IP telephonysystem can provide not only voice application, butalso many kinds of intelligent services. It can replacethe traditional Private Branch eXchange(PBX) systemcompletely. If the backbone (such as Internet) IPtelephony and the LAN IP telephony can be combined together, it will make IP telephony more perfect and embody the benefits of IP telephony hoth inbackbone and in LAN.