bids are invited for intercommunication system for mfv sagarika intercom exchange system - electronic intercom system with minimum 12 extension connectivity suitable for on-board applications, with necessary features , telephone extension units - wall mountable & table top compatible telephone extension units , loud ringer unit - suitable for noisy areas with operating voltage of 230v ac , metal junction box - powder coated metal junction box , cabling connecting modules - supply of all required interconnection modules/accessories for complete installation , telephone io module - telephone i/o module complete with back box annd face plate , telephone cable - two pair shielded telephone cable copper conductor total quantity : 115