access the systems
E:The system can be very simple extension of the
    TV wall, the user can arrive at any network
     location expansion into the control room of TV wall
F:TV wall switch operation is very convenient, similar
     to a traditional analog system
G:Convenient review of the video data, user only
    need to specify any cameras,specify time period
    and you can search the information.
  Systems support keyboard operation
  Protection of data security
  upports multiple RAID disk , support hot backup
    disk to protect the safety of stored data
  The system supports dual-stream: With the front-
     end equipment and central facilities to support the
     dual-stream, by the user choose to access the
     stream