 There was considerable damage to communications infrastructure . The public telephone system was not available , and two of Haiti 's largest cellular telephone providers , <unk> and <unk> Haiti , both reported that their services had been affected by the earthquake . <unk> @-@ <unk> <unk> was also disrupted . According to <unk> Sans Frontières ( <unk> ) , Radio <unk> , which broadcasts out of Port @-@ au @-@ Prince and reaches 90 percent of Haiti , was initially knocked off the air , but it was able to resume broadcasting across most of its network within a week . According to <unk> , some 20 of about 50 stations that were active in the capital region prior to the earthquake were back on air a week after the quake . 
