1.市场背景随着WLAN、VoIP、网络视频监控等新业务的飞速发展,大量的Wireless LAN AP、IP Phone、IP Camera等基于IP的终端出现在我们周围。这些设备通常数量众多、位置特殊、数据/电源线布线复杂、设备取电困难,其实施部署不仅消耗人力物力,增加建网成本,而且拖延了建设 1. Market Background With the rapid development of new services such as WLAN, VoIP and network video surveillance, a large number of IP-based terminals such as Wireless LAN AP, IP Phone and IP Camera appear around us. These devices are usually numerous, have special locations, and have complicated data / power line layouts and difficulties in obtaining power from the devices. Their deployment not only consumes manpower and resources, increases network costs, and delays construction