<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
       
<S>                                     <C>                     <C>                     <C>
<PERIOD-TYPE>                                    3-Mos                   3-Mos                   3-Mos
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998             DEC-31-1999
<PERIOD-START>                             JAN-01-1998             JAN-01-1998             JAN-01-1999
<PERIOD-END>                               DEC-31-1998             MAR-31-1998             MAR-31-1999
<CASH>                                      25,597,461                       0              10,392,752
<SECURITIES>                                         0                       0              15,884,601
<RECEIVABLES>                               19,570,031                       0              23,683,119
<ALLOWANCES>                               (1,908,811)                       0             (2,932,559)
<INVENTORY>                                  6,826,732                       0               9,026,881
<CURRENT-ASSETS>                            73,019,623                       0              79,850,251
<PP&E>                                      28,139,460                       0              31,882,773
<DEPRECIATION>                             (4,882,832)                       0             (6,353,628)
<TOTAL-ASSETS>                             185,655,629                       0             199,325,440
<CURRENT-LIABILITIES>                       44,519,887                       0              57,484,079
<BONDS>                                    168,267,797                       0             174,937,464
<PREFERRED-MANDATORY>                                0                       0              19,300,000
<PREFERRED>                                          0                       0                       0
<COMMON>                                    27,486,554                       0              27,806,290
<OTHER-SE>                                (48,835,439)                       0            (41,238,568)
<TOTAL-LIABILITY-AND-EQUITY>                         0                       0                       0 
<SALES>                                              0               4,715,792              15,170,190
<TOTAL-REVENUES>                                     0               6,522,865              30,480,866
<CGS>                                                0               3,882,456              11,591,712
<TOTAL-COSTS>                                        0               4,798,024              20,073,569
<OTHER-EXPENSES>                                     0               6,824,284              26,200,473
<LOSS-PROVISION>                                     0                       0                 902,468
<INTEREST-EXPENSE>                                   0                  52,568               5,936,665
<INCOME-PRETAX>                                      0             (5,110,666)            (20,687,249)
<INCOME-TAX>                                         0                       0                       0
<INCOME-CONTINUING>                                  0             (5,110,666)            (20,687,249)
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                         0             (5,110,666)            (20,687,249)
<EPS-PRIMARY>                                        0                  (0.19)                  (0.74) 
<EPS-DILUTED>                                        0                  (0.19)                  (0.74)

          

</TABLE>