supply of supply installation, transportation, testing, execution and commissioning of block proving by axle (bpac) using block panel and ufsbi of double line operation.supply installation, transportation, testing, execution and commissioning of block proving by axle (bpac) using block panel and ufsbi of double line operation.,supply of block proving by axle (bpac) using block panel and ufsbi of double line operation as per specification no. irs:s-105/2012 [ver.0]with latest amdt. each set consisting of following (i) universa l fail safe block interface complete with all accessories as per spec. no irs:s-104/2012[ver.0] with latest ve rsion and amdt. qt 02 nos. (ii) block panel complete with all accessories as per rdso drg no.rdso/s/3201 7 for double line (latest amdt)- qty- 02 nos.(iii) relay rack with due locking and sealing arrangement as per rdso drg no.rdso/s/32018 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/191/2006, qty ? 02 nos. with all type lighting protection and inbuilt automatic media ch ange over with voice, e1 and dark fiber port. [ warranty period: 12 months after the date of delivery ] ] , installation, transportation, testing, execution and commissioning of block proving by axle ( bpac) ] at (location) os/s&t/st/guntur, scr andhra pradesh 1.00 set 3.