RailTel Corporation of India Limited (RailTel), a Public Sector Undertaking under Ministry of Railway, is a leading Telecom Service Provider. RailTel has State-of-the-Art Telecom Network using SDH/DWDM-based transmission systems and MPLS-IP technology.. RailTel caters all communication requirement of Indian Railways like voice, train operations/control, data network for ticketing, Railnet, MIS & security systems etc. RailTel is 5th largest & a neutral telecom service provider in India. All unified service and mobile service telecom operators are its customers. RailTel also facilities Multisystem operators (MSO’s) for extending digital & analog TV signal across cities.