<Page> Exhibit 99.1 AVAYA INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS AS OF DECEMBER 31, 2002 AND SEPTEMBER 30, 2002 (UNAUDITED; DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS) <Table> <Caption> 12/31/2002 9/30/2002 (a) ----------- ---------- ASSETS Cash and cash equivalents $651 $597 Receivables less allowances of $115 at December 31, 2002 and $121 at September 30, 2002 750 876 Inventory 432 467 Deferred income taxes, net 174 160 Other current assets 217 203 ----------- ---------- TOTAL CURRENT ASSETS 2,224 2,303 ----------- ---------- Property, plant and equipment, net 866 896 Deferred income taxes, net 352 372 Goodwill 145 144 Other assets 156 182 ----------- ---------- TOTAL ASSETS $3,743 $3,897 =========== ========== LIABILITIES Accounts payable $290 $374 Current portion of long-term debt - - Business restructuring reserve 129 170 Payroll and benefit obligations 309 309 Deferred revenue 96 91 Other current liabilities 375 380 ----------- ---------- TOTAL CURRENT LIABILITIES 1,199 1,324 ----------- ---------- Long-term debt (b) 934 933 Benefit obligations 1,104 1,110 Other liabilities 505 530 ----------- ---------- TOTAL NONCURRENT LIABILITIES 2,543 2,573 ----------- ---------- </Table> Commitments and contingencies <Page> <Table> <Caption> 12/31/2002 9/30/2002 (a) ----------- ---------- STOCKHOLDERS' EQUITY Series A junior participating preferred stock, par value $1.00 per share, 7.5 million shares authorized; none issued and outstanding - - Common stock, par value $0.01 per share, 1.5 billion shares authorized, 366,785,024 and 364,752,178 issued (including 584,239 and 557,353 treasury shares) as of December 31, 2002 and September 30, 2002, respectively 4 4 Additional paid-in capital 1,708 1,693 Accumulated deficit (1,220) (1,182) Accumulated other comprehensive loss (487) (512) Less treasury stock at cost (4) (3) ----------- ---------- TOTAL STOCKHOLDERS' EQUITY 1 - ----------- ---------- TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $3,743 $3,897 =========== ========== </Table> NOTES TO THE BALANCE SHEETS: (a) Certain prior year amounts have been reclassed to conform to the fiscal 2003 presentation. (b) On December 23, 2003 the Company commenced an offer to exchange up to 70%, or $336 million of the net book value as of December 31, 2002, of its outstanding LYONs. The offer will expire on Jan. 27, 2003, at 12:00 p.m. midnight, EST. <Page> AVAYA INC. AND SUBSIDIARIES THREE MONTH COMPARATIVE STATEMENTS OF OPERATIONS (UNAUDITED; DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS) <Table> <Caption> FOR THE THREE MONTHS FOR THE THREE MONTHS ENDED DECEMBER 31, ENDED DECEMBER 31, 2002 2001(a) ------------------------ ----------------------- REVENUE Products $605.2 $758.4 Services 461.6 548.1 ------------------------ ----------------------- 1,066.8 1,306.5 ------------------------ ----------------------- COST Products 358.9 462.5 Services 284.7 327.0 ------------------------ ----------------------- 643.6 789.5 ------------------------ ----------------------- GROSS MARGIN 423.2 517.0 ------------------------ ----------------------- OPERATING EXPENSES Selling, general and administrative 344.6 418.4 Business restructuring and related charges 4.2 5.5 Research and development 92.9 120.0 ------------------------ ----------------------- TOTAL OPERATING EXPENSES 441.7 543.9 ------------------------ ----------------------- OPERATING INCOME (LOSS) (18.5) (26.9) Other income (expense) - net 3.2 5.6 Interest expense (18.8) (8.7) ------------------------ ----------------------- INCOME (LOSS) BEFORE INCOME TAXES (34.1) (30.0) Provision (benefit) for income taxes 3.5 (10.5) ------------------------ ----------------------- NET INCOME (LOSS) $(37.6) $(19.5) ======================== ======================= EARNINGS (LOSS) PER SHARE - BASIC AND DILUTED $(0.10) $(0.09) BASIC AND DILUTED SHARES 366 287 EFFECTIVE TAX RATE - Provision (Benefit) NM (35.0%) </Table> NM=Not Meaningful (a)Certain prior year amounts have been reclassified to conform to the fiscal 2003 presentation. <Page> AVAYA INC. AND SUBSIDIARIES OPERATING SEGMENTS STATEMENTS OF REVENUE (UNAUDITED; DOLLARS IN MILLIONS) <Table> <Caption> REVENUE FOR THE THREE MONTHS FOR THE FISCAL YEAR ENDED ENDED SEPTEMBER 30, 2002 (A) DECEMBER 31, 2002 ------------------------------------------------------------------- Q1 Q2 Q3 Q4 YTD Q1 ------------------------------------------------------------------- Converged Systems & Applications $563 $547 $492 $478 $2,080 $428 Small & Medium Business Solutions 59 59 58 60 236 56 Services 548 530 505 485 2,068 462 Connectivity 136 143 164 129 572 121 ------- ------ ------ ------ ------ ----------------------- Total Avaya $1,306 $1,279 $1,219 $1,152 $4,956 $1,067 ======= ====== ====== ====== ====== ======================= </Table> (A) Certain prior year amounts have been reclassified to conform to the fiscal 2003 presentation. Notes: - Converged Systems & Applications - Includes all enterprise telephony products (ECLIPS and Definity families), VPNs and Data LAN & WAN equipment and related Applications software. - Small & Medium Business Solutions - Includes SME telephony products. - Services - Includes Managed Services, Data Services, Outtasking, Value Added Services, Network Consulting and Implementation. - Connectivity - Includes Structured Cabling (SYSTIMAX-Registered Trademark- & ExchangeMAX-Registered Trademark-) and Electronic Cabinets.