supply of supply installation testing & commissioning of dual redundantsupply installation testing & commissioning of dual redundant,supply installation testing & commissioning of dual redundant arrangement of ufsbi electr onics for exchange of vital relay state exchange pertaining to ib signalling, etc. the system comprises of f ollowing sub systems: a) electronics for ufsbi interface as per irs spec. no. irs:s-104/2012 ver. 0 (latest a mendment). b) modem for ufsbi (for use of secondary media fc / quad) railway shall define secondary m edia before placing of order. c) automatic media changeover of modem working on redundant channels for data transmission on ofc/quad. d) wired 36-u floor mounting ms cabinet suited to fit 2 sets of ufsbi electr onics with siemens grey/smoke grey powder coating (rust proof and long life), tinted 3-4 mm thick tinted acrylic/ polycarbonate/ glass sheet fitted on front door and metal back door, with double lock and bottom c able entry facility. note: necessary arrangement / terminations must be provided for display of all signal as pects, tracks, ofc media and ufsbi system (present in the entire block section), at the end station / divisi onal control on ofc media. one rack of ufsbi having one main and one standby unit (2 unit of ufsbi elect ronic) make: daltron or similar [ warranty period: 30 months after the date of delivery ] ]