bids are invited for 64 line ruggedized exchange , digital key phone , operator console with 32 dss keys , ip phone with giga port , 100 pair push button mdf box with 5 stage protection level and led indication , 100 pair push button idf box , sip trunks voip 16 chanel card with 5 ip sip license , isdn pri cept card one port each , e1 isdn pri cept card with optical termination one port each , gsm card for 4 port. gsm sim 4g volte support , radio interface card 4 port with software cables and connectors for vhf hf uhf radios , additional cpu card , additional psu 48vdc card , smart solar fcbc with battery bank 12v26ah x 4 and solar panel , digital grounding device single phase with mil std jss 55555 , rj 45 surge protector for poe plus plus single port , cli with speaker phone total quantity : 1971