indoor coverage

In partnership with Bouygues Telecom, Axione was appointed to design and install the infrastructure for providing overall 2G, 3G and 4G mobile network coverage for line 2 of the Nice tram system on behalf of Métropole Nice Côte d’Azur, a public body for intermunicipal cooperation.

Initiated in March 2019, the works are part of a project to extend line 2 of the Nice tram system that links the city from east to west. A 3km tunnel effectively serves the city centre while at the same time preserving its architectural heritage.

Métropole Nice Côte d’Azur wanted partners capable of delivering high-performance multi-carrier telecoms infrastructure. The works were carried out in two phases, with the inauguration of the first section of the line taking place on 28 June 2019. Line 2 was inaugurated in its final form on 14 December 2019. As the client’s engineer, we had to monitor the works in coordination avec various trades.

Radio zones installed
Metres of coaxial cable deployed

Axione’s service

Design of indoor engineering

  • Completion of concept studies and engineering to provide coverage in a 3km tunnel


  • Fit-out of a plant room off-centred from the tunnel housing the equipment for France’s four carriers (Orange, Bouygues Telecom, SFR and Free Mobile)
  • Installation of radio signal distribution system, including 50 antennas
  • Installation of fourteen 4G radio zones, including 4 underground stations
  • Commissioning took place on completion of conclusive operating tests

Axione’s added value

  • Provides a neutral interface
  • Undertakes works with complex sequencing
  • Carries out night work
  • Operates simultaneously with other trades on site
  • Delivers projects on time and in line with required quality standards

Customer benefits

A better connected and more efficient city

– A reliable network that delivers increased connectivity for the region
– Multi-carrier indoor coverage that complies with carrier requirements

User benefits

– Access to 2G, 3G and 4G networks throughout users’ journeys, providing greater convenience
– Emergency services and tunnel operators can use the network to communicate with the outside world if needed

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