procurement and installation of conference system with accessories , description , supply of button microphone , supply of mute button and adapter , supply of 4ch mic/ line in-dnte+lgc, 1/3ru, block , supply of 4ch in /2ch out usb matrix mix, dnte, block , supply of 5.25 w networked loudspeaker + tile bridge , supply of audio matrix processor for sound management and installation, 64 x 64 channels, 12x12 local i/o, s link, i/o port, 2x2 gpio , supply of ahm-64 processing expansion module for echo cancelling application , supply of sq dante audio interface module for sq series mixers- 64x64 bi-directional audio, 96khz/ 48khz, 2 ether con ports , supply of 24 port network switch , installation & commissioning charges