Solutions · Railways and metros
Inside a tunnel, trains lose radio communications. We bring radio coverage to every point of the tunnel.
We design, install, and maintain radio coverage systems for railway and metro tunnels: multiband DAS systems, radiating-cable continuity monitoring, and microwave links to connect remote sites, backed by more than twenty years of experience in mission-critical communications.
The three challenges of running a railway line.
What a railway operator has to guarantee every day, in the tunnel and along the line.
Continuous coverage inside the tunnel
Operational radio networks, emergency networks, and cellular coverage for passengers all have to stay live along the full length of the tunnel. A short circuit caused by a fire, or an open line from a faulty connector, can cut communications exactly where there is no alternative.
Multiple technologies on one system
Different radio technologies have to coexist on the same in-tunnel infrastructure: TETRA, DMR, VHF/UHF, and multiband cellular coverage. This calls for radiating cable and DAS systems that carry them all, without multiplying the installations.
A long-lasting investment
The system has to last for years and be maintained without stopping train traffic: what matters is component quality, technical documentation, and scheduled overnight work.
What happens when radio coverage degrades inside a tunnel.
A concrete case: from detecting the problem to centralized supervision, without ever leaving the tunnel without communications.
Coverage reaches into the tunnel
In a railway tunnel, the radio signal from outside does not get in. We design and install multiband DAS and radiating-cable systems that carry operational radio networks, emergency networks, and cellular coverage inside, on a single line.
Radiating-cable continuity stays under control
The radiating cable is the backbone of in-tunnel coverage. TP-CCV2, a patented Teleproject system, monitors the continuity of the line and reports a short circuit or an open line in real time, before the tunnel is left without communications.
The cellular signal is checked continuously
TP-CELLX, installed in the tunnel, continuously checks 2G, 3G, and 4G cellular coverage for every operator. When it detects a loss of signal, it logs the fault and raises an alert: in that stretch, passengers can no longer make calls.
Radio carriers stay monitored
TP-RFX monitors in-tunnel radio carriers from 15 MHz to 2.7 GHz, including TETRA and DMR: it detects signal degradation before it becomes a service outage.
Everything converges into supervision
Alarms from TP-CELLX, TP-RFX, and TP-CCV2 converge on the Track-TP platform: from a single dashboard, the operator sees the status of coverage and equipment along the whole line, with real-time notifications.
The systems we field.
Each solution has its own in-depth page: here you will find only what it does for a railway or metro line.
- In-tunnel coverage
DAS and radiating cable
We design and install multiband DAS and radiating-cable systems in railway and metro tunnels, with TETRA, DMR, VHF/UHF, and cellular on the same line.
- Radiating-cable continuity
TP-CCV2
A patented Teleproject system that reports short circuits and open lines on the radiating cable in real time, before the tunnel is left without radio coverage.
- Cellular coverage
TP-CELLX
Continuously monitors cellular coverage in railway tunnels and alerts the control room when the operators’ signal drops.
- Spectrum monitoring
TP-RFX
An outdoor spectrum analyzer that monitors TETRA and DMR carriers and other in-tunnel radio transmissions, from 15 MHz to 2.7 GHz.
- Supervision
Track-TP
A web platform that brings together, on a single dashboard, the status of network devices, radio networks, and sensors along the line, with real-time alarms.
- Operational communications
DMR and TETRA radio networks
We design and build operational radio networks: DMR systems, TETRA trunking, and VHF/UHF links, from design to maintenance.
- Site-to-site links
Microwave links
Point-to-point and point-to-multipoint microwave links to connect radio sites and control rooms where fiber does not reach.
- Control room
Radio rooms and dispatch
We build radio rooms with Funktronic consoles and the Respondr platform: operational and emergency radio networks at a single operator position.
- Before the tender
Radio coverage study
Propagation models, link budgets, and system sizing: the technical documentation you need to design coverage and present the project in a public tender.
Our systems integrate with the equipment you already have.
No closed systems: we use open protocols, let different technologies coexist on the same installations, and work with the certifications public tenders require.
Multi-protocol on the same cable
TETRA, DMR, and VHF/UHF coexist on the same radiating cable alongside multiband cellular coverage: existing installations stay valid even when the radio technology changes.
Integration with the operator’s systems
The monitoring systems interface with the railway operator’s supervision platforms via SNMP, relay contacts, and APIs: alarms arrive where you already work.
Certifications and qualifications
Teleproject is certified to ISO 9001:2015 and qualified under SOA OS 19. The Respondr and Track-TP platforms are designed in compliance with the NIS2 directive and the ISA/IEC 62443-3-3 standard.
Request a proposal for your railway line.
Feasibility analysis, radio coverage study, and project planning, tailored to your requirements.