The digital elevator controller is an elevator control device based on TCP/IP network communication. It obtains the elevator control instructions of the community access control/intercom system through the TCP/IP network and communicates with the elevator system through the 485 interface to realize the call and elevator control It also supports the reading head in the elevator car and realizes the elevator control function based on IC card. • Lift Calling： When the building intercom system devices sending out a call, it can be directed to management center, once the call received and handset picked up, video intercom activity can be performed. • Lift surveillance Management center unit can input the lift No.to perform the proactive surveillance in the lift.