supply of 1.slave phone for electronic lc gate system with voice lodding facility as per rdso/spn/tc/51-2021 with later in telephone exchange and spares including traffic control equipment, 2.master telephone with voice logging facility for electronic lc gate telephone system as per rdso specn. no. rdso/spn/tc/51/2011 rev.3 with amendment no. 1 or latest1.slave phone for electronic lc gate system with voice lodding facility as per rdso/spn/tc/51-2021 with later in telephone exchange and spares including traffic control equipment, 2.master telephone with voice logging facility for electronic lc gate telephone system as per rdso specn. no. rdso/spn/tc/51/2011 rev.3 with amendment no. 1 or latest,master telephone with voice logging facility for electronic lc gate telephone system as per rdso specn. no. rdso/spn/tc/51/2011 rev.3 with amendment no. 1 or latest; make- bentron power syste m or similar; compatible with bentron or epsilon. [ warranty period: 30 months after the date of delivery ] ] , slave phone for electronic lc gate system with voice lodding facility as per rdso/spn/tc/5 1-2021 with later in telephone exchange and spares including traffic control equipment, make- bentron or similar, compatible with bentron or epsilon. [ warranty period: 30 months after the date of delivery ] ] => limited