1 EXHIBIT 99 PHONETEL TECHNOLOGIES, INC. VALUATION AND QUALIFYING ACCOUNTS (In thousands) ---------- --------------------------------------- ---------- ADDITIONS BALANCE -------------------------- AT CHARGED TO FROM DEDUCTIONS BALANCE BEGINNING COSTS, EXPENSES ACQUIRED RELATING TO AT END OF YEAR OR TAX BENEFIT COMPANY WRITE-OFFS OF YEAR ---------- --------------- -------- ----------- ---------- Year ended December 31, 1995 Allowances deducted from related balance sheet accounts: Accounts Receivable $44 ($4) $40 Deferred Tax Assets 1,913 4,335 6,248 Intangible Assets 1,255 2,537 3,792 Year ended December 31, 1996 Allowances deducted from related balance sheet accounts: Accounts Receivable 40 92 ($40) 92 Deferred Tax Assets 6,248 3,455 9,703 Intangible Assets 3,792 7,768 (1,368) 10,192 Year ended December 31, 1997 Allowances deducted from related balance sheet accounts: Accounts Receivable 92 267 $148 507 Deferred Tax Assets 9,703 3,054 12,757 Intangible Assets 10,192 15,528 25,720