supply of abs telephone instrument single pushbutton.,stp( shield twisted pair) cat-6 cable & supply and installation of complete indoor wiring of 19 inch 42 u covered rack of size 2035 mm x 600 mm x 600 mm (approx.) , abs telephone instrument single pushbutton. telephone instrument single push button with cli facility as per annexure - b make: beetel/similar. [ warranty period: 12 months after the date of del ivery ] ] , stp( shield twisted pair) cat-6 cable as per annexure-a make : d-link or similar [ warr anty period: 30 months after the date of delivery ] ] , supply and installation of complete indoor wiring of 19 inch 42 u covered rack of size 2035 mm x 600 mm x 600 mm (approx.) as per annexure - c make: vertiv/apc/similar. [ warranty period: 3 6 months after the date of delivery ] ]