Call System

Communication of all participants in the traffic with the help or information centers is achieved by telephone call system – TCS

TCS device is a SOS phone which is, via Ethernet network, connected to TMCC and has two-way communication. All SOS phones are logically placed and TMCC operators have detailed view which phone is making a call and if needed, operators can call any particular device. TCS devices are located inside SOS niches in tunnels, in front of and in the back of each tunnel and on every 2 kilometers of the highway.


  • 1. TMCC
  • 2. Two-way communication
  • 3. TCS – telephone call system
  • 4. SOS niche