1. It’s easy to be connected into LAN or internet with its convenient HUB function..2. Server LED and network LED indicating the communication state between other IP devices and server.3. The core device in intercom system, supporting bidirectional paging and talk for all kinds of terminals and other devices. 4. It has a microphone and a speaker. 5. It can work as an independent device in the IP system without the suport of server when paging or talking. It is very easy and simple to build an intercom system with it and to operate. 6. AUX input and output, local input can be converted to digital audio and transmit to other device. 7. High quality sound, it is an ideal choice for the application that needs high quality sound. I