This is the Emergency Telephone functional specification for the ET system Implemented along the expressway. The document will be divided into three portions namely Road side Equipment Hardware, Control Room Equipment Hardware and Software and Graphical user interface section.

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The emergency intercom system is an ip call station system specially set up in the subway. The emergency system is a complete set of communication system. The communication system centrally manages the emergency help points of the platform, the waterproof anti-electromagnetic interference telephone in the tunnel, and the walkie-talkie of the subway elevator. The intercom uses the ip pbx system to host all ip walkie-talkies using the ip pbx server.

Advance SIP technology TR069 network management system Integrate system of telephone system, intercom system, and public address system Fully redundancy philosophy according to customer requirement High reliability Simplicity of operator Immunity to electromagnetic interference Built-in recording system Interface to control system, CCTV system, radio system, etc. Online continual self-checking and diagnostic

KNTECH is not only the largest manufacturer of industrial telephones and emergency intercoms in Asia, but also a solution provider for subways, airports, petrochemicals, and outdoor.

The emergency telephone system is a product designed for emergency communication in railway tunnels launched by KNTECH. Its function is to provide voice services in the event of an emergency in the railway tunnel, and as the last reliable voice communication guarantee in the case of an emergency in the tunnel.