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3Com局域网话音系统方案意指由包交换数据网络提供话音与数据服务的集成,即以开放的局域网包交换技术实现专用PBX的话音服务功能并与现有局域网无缝集成,其核心产品是NBX100通讯系统。NBX系统包括两个主要部件:一个是模块化主机箱,另一个是商用话机。主机箱执行SIP主服务器的所有功能,并额外免费提供基本的话音留言、自动话务台、统一消息等功能。其4端口模拟中继线插卡可便于用户与公共电话
The 3Com LAN voice system solution means the integration of voice and data services provided by the packet switched data network, that is, the voice service function of the private PBX is realized through the open LAN packet exchange technology and seamlessly integrated with the existing local area network. Its core product is NBX100 communication system. The NBX system consists of two main components: one a modular main chassis and the other a commercial phone. The main chassis performs all the functions of the SIP master server and additionally provides basic features such as basic voicemail, automatic attendant, and unified messaging. Its 4-port analog trunk card makes it easy for users and public phones