Sri Lanka Railway had been using an overhead copper wire based telecommunication system from its inception till 1985. Each railway Line had its own telephone circuit (control circuit) connecting all railway station to one of the train control centers at Colombo, Nawalapitiya or Anuradhapura. In this system, the Dialing was done with very special key and selector arrangement.
In 1985, this conventional system was replaced by an Islandwide VHF/UHF Radio Telecommunication System (known as BBC System). The system was procured from M/s. Brown Boveri Co. Ltd of Switzerland through financing of Government of Sri Lanka and Switzerland Government. The installation work was completed in 1986 and the system functioned satisfactory till about 2012. However, SLR faced difficulties in finding spare parts and maintaining the system.
Then, a system purchased from one of the Sri Lanka Telecom Service provider was installed and used. This system had its own problems and could not fulfil SLR requirements satisfactory.
Safety bearing of Railway Telecommunication System:
Every railway in the world has its own telecommunication system connecting,
- Railway Stations to Train Control Centers
- Locomotives of trains to Train Control Centers
- Maintenance staff to Train Control Centers etc.
The Purposes are,
- Achieving safety of Train Operation (Avoid collisions, and disturbances)
- Enhance Railway Operation (train controlling) related decision making
- Maintain coordination between train operation related staff
- Support to take train operation related management decisions.