For the communication in the indoor environment.
FEATURES：
1. With a handset and a LCD display, it can be table topped or wall-mounted;
2. With two buttons, support one-touch call & broadcast or the customized double call buttons if the targets have been pre-set on the server;
3. By default, it’s a full-duplex intercom; with options for half-duplex intercom in a noisy environment;
4. With a built-in 3W speaker and microphone, available to make a hand-free call and receive broadcast;
5. Support talking without IP intercom server(Initiating and receiving)
6. With the audio output and the microphone input to connect the earphone;
7. With a standard RJ45 interface supportive of crossing network segment and router, accessible to the system if the Ethernet is available.