这些硬件设备本质上类似于路由器和交换机等网络设备，因为它们都将软硬件合并到一个可以立即投入使用的包中。
These hardware devices are similar in nature to network devices like routers and switches in that they combine hardware and software in a turnkey package.
从某种意义上说，这种技术支持任意规模的大型设备网络，该网络可以包含服务器、终端设备和交换机(用于设备发现和包路由)。
In a sense, this permits arbitrarily large networks of devices, including servers, end devices, and switches (complete with device discovery and packet routing).
报警系统。报警传输系统和设备。第1 - 5部分：包交换网络PS N用要求。
Alarm systems - Alarm transmission systems and equipment - Part 1-5: requirements for Packet Switched Network PSN.
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