supply of supply, installation testing and commissioning of block proving by digital axle counter as per rdso specn no. rdso / spn / 175 / 2005 ver.1 with latest amendment for single line along with supply of block telephone as per rdso / spn / 191 / 2006 using ufsbi & block panel for single line operation with automatic media change oversupply, installation testing and commissioning of block proving by digital axle counter as per rdso specn no. rdso / spn / 175 / 2005 ver.1 with latest amendment for single line along with supply of block telephone as per rdso / spn / 191 / 2006 using ufsbi & block panel for single line operation with automatic media change over, supply, installation testing and commissioning of block proving by digital axle counter as per rdso specn no. rdso / spn / 175 / 2005 ver.1 with latest amendment for single line along with supply of block telephone as per rdso / spn / 191 / 2006 using ufsbi & block panel for single line operation with automatic media change over which consists of following per set. 1. supply of station master%u2019s block panel for single line %u2013ssbpac ( d ) as per rdso / spn / 175 / 2005 or latest along with supply of block telephone as per rdso / spn / 191 / 2006 or latest ( inspection by rdso ) -02 nos 2. supply of micro processor based ssbpac ( d ) for single line including wired relay rack without relays as per rdso / / spn / 175 / 2005 or latest ( inspection by rdso ) .-02 nos 3. supply of lighting and surge protection device for power line 24v dc, class %u2013d ( inspection by