supply of 2 mb programmable primary digital drop insert multiplexer complete with all accessories as per rdso specification no. irstc-68 / 2012 rev.0. amdt.1 including cables and connectors required for connectivity with existing sdh equipment. the di mux shall be fully wired for 30 channels and equipped with ( a ) power supply card - 02 nos. ( b ) nim card - 01 no ( c ) tributary card - 01 no. ( d ) 2 w / 4 w e&m card ( 4 circuits per card ) - 05 nos. ( e ) 2 w subscriber loop interface card ( 4 circuit per card ) -01 no and ( f ) 2 w exchange loop interface card ( 4 circuits per card ) - 01 no. note: mux should be compatible with existing nms & pd mux of webfil make over waltair division . [ warranty period: 30 months after the date of delivery ]