Universal Fail-Safe Block Interface (UFSBI) as per RDSO/SPN/147/2005, is a fail-safe digital triple modular redundant (TMR) multiplexer capable of transferring 16+16 i.e. a total of 32 On-Off relay states between locations physically separated by a distance but connected through a voice/data channel over OFC/Microwave or Quad cable. The UFSBI can be effectively used to replace the signalling cables required for repeating relays between mid-section block huts and end stations. The system development had been initiated by Ministry of Information technology, under technical guidance from IIT, Delhi & Centre of Knowledge Base Systems, Jadavpur University, along with railway expertise and field trial facilities that was provided by South Eastern Railways. The complete hardware and software are indigenously developed by our team of engineers and manufactured at our facilities in Kolkata, thereby, ensuring prompt after sales service and availability of spares over the entire equipment life period. The system ad been initially designed and approved by the Research Design & Standards Organization of Indian Railway for interfacing conventional Single & Double line Block Instruments on FC voice / data channels. But,eventually it found its utility in repeating relay states in Intermediate Block Signaling and Automatic Block Signaling applications where hundreds of copper conductors were replaced by a pair of optical fiber cables and the UFSBI equipment. UFSBI is now being extensively used for providing push button type block instrument as per IRS Spn. No. IRS:S-105/2012 and for Intermediate Block Signalling applications as a replacement of laying signalling cables which has proven to be cost effective and reliable.
Block Proving through Digital Axle Counter using Single Section Digital Axle Counter with UFSBI & Block Panel as per IRS Spn. No. IRS:S-105/2012