East Central Railway

East Central Railway has published Supply Of dtmf technology-based telephone in compliance to rdso spec. no. (rdso/spn/191/2005) with dual media option (quad /dark optical fiber cable). , dtmf technology-based telephone in compliance to rdso spec. no. (rdso/spn/191/2005) w th dual media option (quad / dark optical fiber cable). the system is interchangeably workable on quad ca ble (upto 30 db channel loss that translates upto 15 km typically) or on optical fiber (upto 5 db channel los s that translates upto 15 km typically). [ warranty period: 30 months after the date of delivery ] ]. Last date of submission for this tender is 2026-07-13. This is a Fixed Phones tender in Dhanbad, Jharkhand