Tender For supply of upgradation of existing power backup of ups video conferencing devices ip pbx system and nms : : - 30 kva online ups system 2 sets with configured in high availability mode , network management software , video conferencing device equipped with look at me feature , ipbx , 8 port gateway , video phones for office of chief iso x 2, se iso, se fmisc, se swic and se computer centre. , telephone instrument for iso, fmisc, nhp, computer centre. , 8 port poe switch , installation and commissioning charges, including maintenance support for a period of 02 years post completion of the warranty period, as applicable