RailTel Corporation of India is a Government of India enterprise which has created created state of the art multimedia telecom network using SDH/DWDM-based transmission systems and high end routers for MPLS-IP network.
The network forms the backbone of all communication in the railway system ranging from train control, station master-to-station master or station master-to-driver contact and emergency alert. It also supports the entire unreserved ticketing and passenger reservation systems.
Now RailTel will cover the entire State with Optical Fiber Cable (OFC) network in 2 years. RailTel , is currently focusing on building OFC architecture along three important routes – the Vriddhachalam-Salem section (136 km), the Coimbatore-Pollachi-Dindigul stretch (160 km) and the Villupuram-Mayiladuthurai-Kumbakonam-Thanjavur segment (220 km). With OFC expansion over the years, the Railway’s dependence on communication channels hired from the BSNL had been brought down to about 10 per cent.