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The J&R broadcasting system can be organically combined with the emergency telephone system, and the tunnel emergency telephone system and the tunnel broadcasting system can be organically combined. The same console, the same signaling system, and the same communication cable can be used to achieve unified control of the two systems. In this way it not only simplifies the system and saves investment but also effectively improves the work efficiency of the monitoring room of the team road management office. When an emergency occurs in the tunnel, drivers and passengers can call the highway management department for help through the emergency phone, and the highway management department can directly evacuate the people in the tunnel through emergency broadcasts.
● The power amplification of this broadcast system uses near-end amplification, which is a significant feature. It can be transmitted and controlled through the access network, truly realizing the remote operation of the broadcast system;
● The system adopts caller control. After the console broadcast is released, the system can automatically enter the standby working state to reduce energy consumption;
● The broadcasting system can program-control fixed-point, fixed-film, and full-line calls, the voice is clear and loud during broadcasting, and there is no feedback howling;
● This broadcasting system is simple to operate. The system host and emergency telephone system are integrated into a main control machine. When the broadcast system needs to work, only simple operations are required on the main control machine. A microphone or a duty telephone can be used for broadcasting.
