Communication technology for railway construction
Railway stations
- Informators
- Clocks
- Radio systems
- CCTV systems
- Data transfer systems and networks
- Digital telephone exchanges
- Digital transmission systems
- Radio networks
- Electric fire-warning and alarming devices
- Electric warning and alarming device
- Local cabling
Inter-station track lines
- Track metallic communication cables
- Track optical communication cables
- Long-distance optical communication cables
- Relocating metallic and optical cables outside railway administration bodies
- Computing very high voltage lines effect on communication devices
Communication Devices for Public Buildings
Civil engineering
- Clocks
- Radio systems
- CCTV systems
- Data transfer systems and networks
- Digital telephone exchanges
- Digital transmission systems
- Radio networks
- Electric fire-warning and alarming devices
- Electric warning and alarming device
- Access systems
Motorway and road construction
- SOS system devices and lines
- Relocating metallic and optical cables
- Computing very high voltage lines effect on communication devices
Telecommunications construction
- Local telecommunication networks
- Long-distance cable lines including long-distance optical cables
