supply of supply and installation of ofc & e1 int [supply and installation of ofc & e1 integrated device with ofc ports & stm interlinking interface (e1 interface) / 12 interface six (v.21/v.23) supporting 2w/4w & six quad protection ports (2w/4w) for individual six e&m interfaces suitable for up to 2u height/19supply and installation of ofc & e1 int [supply and installation of ofc & e1 integrated device with ofc ports & stm interlinking interface (e1 interface) / 12 interface six (v.21/v.23) supporting 2w/4w & six quad protection ports (2w/4w) for individual six e&m interfaces suitable for up to 2u height/19,supply and installation of ofc & e1 integrated device with ofc ports & stm interlinking interface (e1 interface) / 12 interface six (v.21/v.23) supporting 2w/4w & six quad protection ports (2w/4w) for individual six e&m interfaces suitable for up to 2u height/19 rack mountable for lvcd / digital axle counter / ufsbi /control phone connectivity on optical fiber & e1(stm) with automatic change over features (e1 to quad /ofc-ofc-quad/ofce1-quad), quad health indications for each e&m interface & potential free contacts as required by railways & four ethernet ports & rs232 ports integrated in the unit / audible failure uplink resettable buzzer & dual power supply support 18vdc to 72 vdc.this includes supply of required optical patch cords for connecting to fdms unit. one dc to ac adaptor to be provided. make: teamlink fabio 2cx or maple 4co or better.