<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1999.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                          14,394
<SECURITIES>                                         0
<RECEIVABLES>                                   44,477
<ALLOWANCES>                                     4,800
<INVENTORY>                                      4,573
<CURRENT-ASSETS>                                87,033
<PP&E>                                          68,612
<DEPRECIATION>                                  58,474
<TOTAL-ASSETS>                                 581,597
<CURRENT-LIABILITIES>                           70,471
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           353
<OTHER-SE>                                     437,995
<TOTAL-LIABILITY-AND-EQUITY>                   438,348
<SALES>                                        107,107
<TOTAL-REVENUES>                               107,107
<CGS>                                           28,605
<TOTAL-COSTS>                                   60,796
<OTHER-EXPENSES>                                37,082
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,773
<INCOME-PRETAX>                               (21,520)
<INCOME-TAX>                                   (2,168)
<INCOME-CONTINUING>                           (23,688)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (23,688)
<EPS-BASIC>                                     (0.74)
<EPS-DILUTED>                                        0