<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM (A) THE
CONSOLIDATED BALANCE SHEET AND CONSOLIDATED STATEMENT OF INCOME INCLUDED IN THE
COMPANY'S FORM 10-Q FOR THE PERIOD ENDING SEPTEMBER 30, 1999 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH (B) FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JUL-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          88,685
<SECURITIES>                                   136,371
<RECEIVABLES>                                   97,293
<ALLOWANCES>                                   (9,285)
<INVENTORY>                                     19,219
<CURRENT-ASSETS>                               359,759
<PP&E>                                         179,464
<DEPRECIATION>                               (105,938)
<TOTAL-ASSETS>                                 574,207
<CURRENT-LIABILITIES>                          127,723
<BONDS>                                        160,717
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       132,324
<OTHER-SE>                                      14,264
<TOTAL-LIABILITY-AND-EQUITY>                   574,207
<SALES>                                         75,537
<TOTAL-REVENUES>                               129,942
<CGS>                                           25,897
<TOTAL-COSTS>                                   63,946
<OTHER-EXPENSES>                                70,955
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               (324)
<INCOME-PRETAX>                                (5,283)
<INCOME-TAX>                                     1,585
<INCOME-CONTINUING>                            (3,698)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (3,698)
<EPS-BASIC>                                     (0.08)
<EPS-DILUTED>                                   (0.08)