<ARTICLE> 5 <LEGEND> FINANCIAL DATA SCHEDULE FOR ADELPHIA BUSINESS SOLUTIONS, INC.(FORMERLY HYPERION TELECOMMUNICATIONS, INC.) FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 </LEGEND> <CIK> 0001017648 <NAME> ADELPHIA BUSINESS SOLUTIONS, INC. <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> SEP-30-1999 <CASH> 125,988 <SECURITIES> 0 <RECEIVABLES> 68,600 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 740,870 <DEPRECIATION> 0 <TOTAL-ASSETS> 1,078,885 <CURRENT-LIABILITIES> 49,580 <BONDS> 795,052 <PREFERRED-MANDATORY> 0 <PREFERRED> 252,161 <COMMON> 551 <OTHER-SE> (62,915) <TOTAL-LIABILITY-AND-EQUITY> 1,078,885 <SALES> 0 <TOTAL-REVENUES> 99,000 <CGS> 0 <TOTAL-COSTS> 174,944 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 56,383 <INCOME-PRETAX> (105,739) <INCOME-TAX> 0 <INCOME-CONTINUING> (105,739) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (136,251) <EPS-BASIC> (2.46) <EPS-DILUTED> (2.46)