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ECTS IP-in-IP emergency call system for tunnels



IP-controlled emergency call system

  • Routine/emergency call
  • Hands-free or hands-free communication
  • Full duplex mode
  • Hotline
  • Conference call
  • Many basic options: automatic/manual response, busy line transfer, unanswered transfer and period transfer…
Technical fact sheet: ECTS alert system

ETCS is a cost-effective system with the application of advanced IP AudioTM technology for highways and tunnel. ETCS is usually connected to a control centre and/or emergency troubleshooting services. Automatic dialing on the handset elevator is often used to connect users directly to the remote control center for an appropriate response in each situation, or point-to-point communication by keyboard for routine maintenance inspection staff.

The ETCS system can support general or group pagination via the main console of the control room, even very complex, by combining the appropriate elements, such as an additional siren/speaker or a flash beacon.

The ETCS system supports the fibre optic network. Modern and efficient road administration facilities use enhanced control and mechanization methods to gain better control while reducing costs. The use of fiber optics for effective communications and to monitor, analyze and control equipment and facilities is proven to improve efficiency. Fibre optic networks are therefore used to manage, control and interconnect a wide range of traffic technology such as the public address system/SCADA/fire detection system.

System scheme

The figure below shows a typical configuration of the ETCS system. Emergency call phones can be connected in a circle to provide a redundant fiber optic network
or online to connect directly to an IPBX. The distance between phones may differ somewhat from country to country, depending on local regulations and best practices. For example, for European road tunnels, the 2004/54 EUROPEAN Directive on minimum safety requirements in tunnels stipulates that road administrators do not exceed 150M between emergency telephone calls for public safety reasons.

schema systeme d'alerte tunnel ECTS


Basic functions:

  • Routine/emergency call
  • Communication via handset or hands-free by different phone models
  • Full duplex mode
  • Quick call to a target terminal by picking up the handset (Hotline); Using digital keys to randomly call all terminals
  • Conference call, automatic/manual response, busy line transfer, unanswered transfer and period transfer.
  • Synchronization of DND status and call return, call recording.

Advanced features:

  • Zone Paging
  • Broadcast to some/all parts of areas via the people search microphone on the IP network
  • Broadcast of a pre-recording alarm message in MP3 or WAV format to the speakers inside the tunnel


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