1. The system should be complete with control functions, be easy to operate and can broadcast a wide range of programs;
2. The system should have a good compatibility, extensibility and auto-detecting function;
3. The system should be able to connect the fire-fighting system and can serve for fire emergency broadcasting system when the alarm rings.

1.General background music broadcast must be available;
2.Zone paging must be available;
3.Fire and emergency broadcast must be available;
4.Setup various audio interfaces, exclusive or linking use must be available.