supply of supply, installation, testing, and commissioning of bpac etc.supply, installation, testing, and commissioning of bpac etc.,supply, installation, testing, and commissioning (as the case may be) of block proving by axl e counter using block panel and ufsbi for double line operation as per spec no. irs: s-105/2012 [ver.0] wi th latest amendment. each set consisting of following: (i) universal fail safe block interface complete with all accessories as per spec no. irs: s-104/2012 [ver.0] with latest version and amendment. qty-02 nos. (ii) block panel complete with all accessories as per rdso drg no. rdso/s/32017 for double line ( with latest a mdt.)- qty-02 nos. (iii) relay rack with due locking and sealing arrangement as per rdso drg no. rdso/s/3 2018 including all relays and wiring as wiring diagram as per rdso drg no. rdso/s/32018 with latest amdt . and supply of all type of relays (iv) block telephone with accessories as per rdso spec no. rdso/spn/19 1/2006, qty-2 nos. with all type lighting protection and inbuilt automatic media change over of modems wo rking on redundant channel for data transmission on ofc/quad-1 pair and secondary modem for ufsbi for use with secondary media ofc/quad-1 pair. as per latest specification :- irs:s-105/2025 ver 1.0 & drawin g :- rdso/s/32017, rdso/s/32019. [ warranty period: 30 months after the date of delivery ] ]