UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

For the Quarterly Period Ended March 31, 2005

OR

For the Transition Period From ___________ to ___________

Commission file number: 001-07260

Nortel Networks Corporation

Registrant’s telephone number including area code (905) 863-0000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to filing requirements for the past 90 days.

Yes ü          No

Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Act). Yes ü          No

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as at May 16, 2005.

4,268,236,086 shares of common stock without nominal or par value

TABLE OF CONTENTS

PART I
FINANCIAL INFORMATION

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All dollar amounts in this document are in United States dollars unless otherwise stated.

NORTEL, NORTEL (Logo), NORTEL NETWORKS the Modified GLOBEMARK, NT, and > THIS IS THE WAY > THIS IS NORTEL (designmark) are trademarks of Nortel Networks.

MOODY’S is a trademark of Moody’s Investor Services, Inc.

NYSE is a trademark of the New York Stock Exchange, Inc.

SAP is a trademark of SAP AG.

S&P and STANDARD & POOR’S are trademarks of The McGraw-Hill Companies, Inc.

All other trademarks are the property of the respective owners.

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PART I
FINANCIAL INFORMATION

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NORTEL NETWORKS CORPORATION
Consolidated Statements of Operations (unaudited)

The accompanying notes are an integral part of these consolidated financial statements

5

NORTEL NETWORKS CORPORATION
Consolidated Balance Sheets (unaudited)

The accompanying notes are an integral part of these consolidated financial statements

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NORTEL NETWORKS CORPORATION
Consolidated Statements of Cash Flows (unaudited)

See note 3 for supplemental cash flow information.

The accompanying notes are an integral part of these consolidated financial statements

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NORTEL NETWORKS CORPORATION
Notes to Consolidated Financial Statements (unaudited)
(millions of U.S. dollars, except per share amounts, unless otherwise stated)

1.		Significant accounting policies
		Basis of presentation
		The unaudited consolidated financial statements of Nortel Networks Corporation (“Nortel”) have been prepared in accordance with accounting principles generally accepted in the United States (“U.S.”) (“GAAP”) and the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) for the preparation of interim financial information. They do not include all information and notes required by U.S. GAAP in the preparation of annual consolidated financial statements. The accounting policies used in the preparation of the unaudited consolidated financial statements are the same as those described in Nortel’s audited consolidated financial statements prepared in accordance with U.S. GAAP for the year ended December 31, 2004. Although Nortel is headquartered in Canada, the unaudited consolidated financial statements are expressed in U.S. dollars as the greater part of the financial results and net assets of Nortel are denominated in U.S. dollars.
		Nortel makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates. Estimates are used when accounting for items and matters such as revenue recognition and accruals for losses on contracts, allowances for uncollectible accounts receivable and customer financing, receivables sales, inventory obsolescence, product warranty, amortization, asset valuations, impairment assessments, employee benefits including pensions, taxes and related valuation allowance, restructuring and other provisions, stock-based compensation and contingencies.
		Nortel believes all adjustments necessary for a fair statement of the results for the periods presented have been made and all such adjustments were of a normal recurring nature. The financial results for the three months ended March 31, 2005 are not necessarily indicative of financial results for the full year. The unaudited consolidated financial statements should be read in conjunction with Nortel’s Annual Report on Form 10-K for the year ended December 31, 2004 filed with the SEC (“Nortel’s 2004 Annual Report”).
		Comparative figures
		Certain 2004 figures in the unaudited consolidated financial statements have been reclassified to conform to the 2005 presentation.
		Recent accounting pronouncements

	(a)		In March 2004, the Emerging Issues Task Force (“EITF”) reached consensus on Issue No. 03-1, “The Meaning of Other-Than-Temporary Impairment and Its Application to Certain Investments” (“EITF 03-1”). EITF 03-1 provides guidance on determining when an investment is considered impaired, whether that impairment is other than temporary and the measurement of an impairment loss. EITF 03-1 is applicable to marketable debt and equity securities within the scope of Statement of Financial Accounting Standards (“SFAS”) No. 115, “Accounting for Certain Investments in Debt and Equity Securities” (“SFAS 115”), and SFAS No. 124, “Accounting for Certain Investments Held by Not-for-Profit Organizations”, and equity securities that are not subject to the scope of SFAS 115 and not accounted for under the equity method of accounting. In September 2004, the Financial Accounting Standards Board (“FASB”) issued FASB Staff Position (“FSP”) EITF 03-1-1, “Effective Date of Paragraphs 10-20 of EITF Issue No. 03-1, ‘The Meaning of Other-Than-Temporary Impairment and Its Application to Certain Investments’”, which delays the effective date for the measurement and recognition criteria contained in EITF 03-1 until final application guidance is issued. The delay does not suspend the requirement to recognize other-than-temporary impairments as required by existing authoritative literature. The adoption of EITF 03-1 is not expected to have a material impact on Nortel’s results of operations and financial condition.
	(b)		In November 2004, the FASB issued SFAS No. 151, “Inventory Costs” (“SFAS 151”). SFAS 151 requires that abnormal amounts of idle facility expense, freight, handling costs and wasted material (spoilage) be recognized as current period charges rather than capitalized as a component of inventory costs. In addition, SFAS 151 requires allocation of fixed production overheads to inventory based on the normal capacity of the production facilities. This statement is effective for inventory costs incurred in fiscal periods

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			beginning after June 15, 2005. The guidance should be applied prospectively. Nortel is currently assessing the impact of SFAS 151 on its results of operations and financial condition.
	(c)		In December 2004, the FASB issued SFAS No. 123 (Revised 2004), “Share-Based Payment” (“SFAS 123R”), which requires all share-based payments to employees, including grants of employee stock options, to be recognized as compensation expense in the consolidated financial statements based on their fair values. SFAS 123R also modifies certain measurement and expense recognition provisions of SFAS No. 123, “Accounting for Stock-Based Compensation” (“SFAS 123”), that will impact Nortel, including the requirement to estimate employee forfeitures each period when recognizing compensation expense, and requiring that the initial and subsequent measurement of the cost of liability-based awards each period be based on the fair value (instead of the intrinsic value) of the award. This statement is effective for Nortel as of January 1, 2006. Nortel previously elected to expense employee stock-based compensation using the fair value method prospectively for all awards granted or modified on or after January 1, 2003 in accordance with SFAS No. 148, “Accounting for Stock-Based Compensation — Transition and Disclosure — an Amendment of FASB Statement No. 123” (“SFAS 148”). Nortel is currently assessing the impact of SFAS 123R on its results of operations and financial condition, as well as the impact of SEC Staff Accounting Bulletin 107, “Share-Based Payment” (“SAB 107”). SAB 107 was issued by the SEC in March 2005, and provides supplemental SFAS 123R application guidance based on the views of the SEC.
	(d)		In March 2005, the FASB issued FSP No. 46(R)-5, “Implicit Variable Interests under FASB Interpretation No. (“FIN”) 46 (revised December 2003), Consolidation of Variable Interest Entities” (“FSP FIN 46R-5”). FSP FIN 46R-5 provides guidance for a reporting enterprise on whether it holds an implicit variable interest in Variable Interest Entities (“VIEs”) or potential VIEs when specific conditions exist. This FSP is effective in the first period beginning after March 3, 2005 in accordance with the transition provisions of FIN 46 (Revised 2003), “Consolidation of Variable Interest Entities — an Interpretation of Accounting Research Bulletin No. 51” (“FIN 46R”). Nortel has determined that the adoption of FSP FIN 46R-5 will not have an impact on its results of operations and financial condition.

2.

Accounting changes

	(a)		The Effect of Contingently Convertible Debt on Diluted Earnings per Share
			On September 30, 2004, the EITF reached a consensus on Issue No. 04-8, “The Effect of Contingently Convertible Debt on Diluted Earnings per Share” (“EITF 04-8”), which addresses when the dilutive effect of contingently convertible debt instruments should be included in diluted earnings (loss) per share. EITF 04-8 requires that contingently convertible debt instruments be included in the computation of diluted earnings (loss) per share regardless of whether the market price trigger has been met. EITF 04-8 also requires that prior period diluted earnings (loss) per share amounts presented for comparative purposes be restated. EITF 04-8 was effective for reporting periods ending after December 15, 2004. The adoption of EITF 04-8 did not have an impact on Nortel’s diluted earnings (loss) per share.
	(b)		Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity
			In May 2003, the FASB issued SFAS No. 150, “Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity” (“SFAS 150”). SFAS 150 clarifies the accounting for certain financial instruments with characteristics of both liabilities and equity, including mandatorily redeemable non-controlling interests, and requires that those instruments be classified as liabilities on the balance sheets. Previously, many of those financial instruments were classified as equity. SFAS 150 is effective for financial instruments entered into or modified after May 31, 2003 and otherwise is effective at the beginning of the first interim period beginning after June 15, 2003. In November 2003, the FASB issued FSP FAS 150-3, “Effective Date, Disclosures, and Transition for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Non-controlling Interests under FASB Statement No. 150, Accounting for Certain Financial Instruments with Characteristics of Both Liabilities and Equity” (“FSP FAS 150-3”), which deferred indefinitely the effective date for applying the specific provisions within SFAS 150 related to the classification and measurement of mandatorily redeemable non-controlling interests.
			Nortel continues to consolidate two enterprises with limited lives. Upon liquidation in 2024, the net assets of these entities will be distributed to the owners based on their relative interests at that time. The minority interests included in the consolidated balance sheets related to these entities were a total of $49 and $50 as of March 31, 2005 and December 31, 2004, respectively. Nortel has

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not yet determined the fair value of these minority interests as of March 31, 2005. The adoption of SFAS 150, as amended by FSP FAS 150-3, did not have a material impact on Nortel’s results of operations and financial condition.

3.		Consolidated financial statement details
		The following consolidated financial statement details are presented for each of the three months ended March 31, 2005 and 2004 for the consolidated statements of operations, as of March 31, 2005 and December 31, 2004 for the consolidated balance sheets and for each of the three months ended March 31, 2005 and 2004 for the consolidated statements of cash flows.
		Consolidated statements of operations
		Other income (expense) — net:

		Hedge ineffectiveness and the discontinuance of cash flow hedges and fair value hedges that were accounted for in accordance with SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities” (“SFAS 133”) had no material impact on the net earnings (loss) for the three months ended March 31, 2005 and 2004 and were reported within other income (expense) — net in the consolidated statements of operations.
		Consolidated balance sheets
		Accounts receivable — net:

Inventories — net:

(a)

Long-term portion of inventory related to deferred costs discussed below which is included in other assets.

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		Finished goods inventory includes certain direct and incremental costs associated with arrangements where title and risk of loss was transferred to the customer but revenue was deferred due to other revenue recognition criteria not being met. As of March 31, 2005 and December 31, 2004, these deferred costs totaled $799 and $829, respectively.
		Other current assets:

(a)

Includes accounts receivable of $2 and $3 and inventories of $57 and $58 as of March 31, 2005 and December 31, 2004, respectively, which were fully provided for.

Plant and equipment — net:

(a)

Included assets held for sale with a carrying value of $43 and $29 as of March 31, 2005 and December 31, 2004, respectively, related to owned facilities that were being actively marketed. These assets were written down to their estimated fair values less costs to sell. The write downs were included in special charges. Nortel expects to dispose of all of these facilities during 2005.

		Goodwill:
		The following table outlines goodwill by reportable segment:

Due to the change in operating segments and reporting segments as described in note 4, a triggering event occurred requiring a goodwill impairment test in the first quarter of 2005 in accordance with SFAS No. 142, “Goodwill and Other Intangible Assets”. Nortel performed this test and concluded that there was no impairment.

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Intangible assets — net:

(a)

Other intangible assets are being amortized over a ten year period ending in 2013, based on their expected pattern of benefit to future periods using estimates of undiscounted cash flows. The amortization expense is denominated in a foreign currency and may fluctuate due to changes in foreign exchange rates.

Other accrued liabilities:

Other liabilities:

		Consolidated statements of cash flows
		Change in operating assets and liabilities:

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Interest and taxes paid (recovered):

4.		Segment information
		General description
		During 2004, Nortel’s operations were organized and represented by four operating segments, which were also its reportable segments: Wireless Networks, Enterprise Networks, Wireline Networks, and Optical Networks. Effective October 1, 2004, Nortel established a new streamlined organizational structure that included, among other things, combining the businesses represented by its four operating segments at that time into two business organizations: (i) Carrier Networks and Global Operations and (ii) Enterprise Networks.
		The two business organizations include four operating segments. Nortel’s Carrier Networks and Global Operations organization is comprised of the following operating segments: (a) Carrier Packet Networks, which is substantially an amalgamation of Nortel’s previous Wireline Networks and Optical Networks operating segments; (b) Code Division Multiple Access (“CDMA”) Networks, which previously represented a portion of the Wireless Networks operating segment; (c) Global System for Mobile communications (“GSM”) and Universal Mobile Telecommunications Systems (“UMTS”) Networks, which also previously represented a portion of the Wireless Networks operating segment. The Enterprise Networks operating segment remains substantially unchanged and is a separate operating segment.
		Although certain structural changes were made to reflect the reorganization effective October 1, 2004, Nortel did not meet the criteria to change its reportable segments under SFAS No. 131, “Disclosures about Segments of an Enterprise and Related Information” (“SFAS 131”), for the 2004 fiscal year. Nortel’s operating results on a segmented basis for the new business organizations were not available for review by the chief operating decision maker (“CODM”) during the 2004 fiscal year, as a significant amount of Nortel’s finance resources were allocated to the restatement activity that was completed during January 2005. Commencing in the first quarter of 2005, Nortel met the criteria under SFAS 131 to change its reportable segments to reflect the four operating segments of the two business organizations established effective October 1, 2004. Nortel’s four reportable segments and other business activities are described below:

	•		Carrier Packet Networks provides: (i) circuit and packet voice solutions, (ii) data networking and security solutions and (iii) optical long-haul and metropolitan optical network solutions. Together, these solutions provide or transport data, voice and multimedia communications solutions to Nortel’s service provider customers that operate wireline networks. These service provider customers include local and long distance telephone companies, wireless service providers, cable operators and other communication service providers.
	•		CDMA Networks provides communication network solutions that incorporate CDMA and Time Division Multiple Access (“TDMA”) network solutions to enable Nortel’s wireless service provider customers to offer their customers, the subscribers for wireless communication services, the ability to be mobile while they send and receive voice and data communications using wireless devices, such as cellular telephones, personal digital assistants and other computing and communications devices.
	•		GSM and UMTS Networks also provides communication network solutions to Nortel’s wireless service provider customers; however, these solutions incorporate GSM and UMTS network solutions.
	•		Enterprise Networks provides: (i) circuit and packet voice solutions and (ii) data networking and security solutions which provide data, voice and multimedia communications solutions to Nortel’s enterprise customers. Nortel’s Enterprise Networks customers consist of a broad range of enterprise customers around the world, including large businesses and their branch offices, small businesses and home offices, as well as government agencies, educational and other institutions and utility organizations.

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•

“Other” represents miscellaneous business activities and corporate functions. None of these activities meet the quantitative criteria to be disclosed separately as reportable segments. Costs associated with shared services and other corporate costs are allocated to the segments based on usage determined generally by headcount. Costs not allocated to the segments are primarily related to Nortel’s corporate compliance and other non-operational activities and are included in “Other”.

Nortel’s vice-chairman and chief executive officer (the “CEO”) has been identified as the CODM in assessing the performance of the segments and the allocation of resources to the segments. The CEO relies on the information derived directly from Nortel’s management reporting system. The primary financial measure used by the CEO in assessing performance and allocating resources to the segments is management earnings (loss) before income taxes (“Management EBT”), a measure that includes the cost of revenues and selling, general and administrative (“SG&A”) expense, research and development (“R&D”) expense, interest expense, other income (expense) — net, minority interests — net of tax and equity in net earnings (loss) of associated companies — net of tax. The CEO does not review asset information on a segmented basis in order to assess performance and allocate resources. The accounting policies of the reportable segments are the same as those applied to the consolidated financial statements.

Segments

The following tables set forth information by segment for each of the three months ended:

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5.

Special charges

During 2001, Nortel implemented a work plan to streamline operations and activities around core markets and leadership strategies in light of the significant downturn in both the telecommunications industry and the economic environment, and capital market trends impacting operations and expected future growth rates (the “2001 Restructuring Plan”).

In addition, activities were initiated in 2003 to exit certain leased facilities and leases for assets no longer used across all segments. The liabilities associated with these activities were measured at fair value and recognized under SFAS No. 146, “Accounting for Costs Associated with Exit or Disposal Activities” (“SFAS 146”).

In 2004 and 2005, Nortel’s focus is on managing each of its businesses based on financial performance, the market and customer priorities. In the third quarter of 2004, Nortel announced a strategic plan that includes a work plan involving focused workforce reductions, including a voluntary retirement program, of approximately 3,250 employees, real estate optimization and other cost containment actions such as reductions in information services costs, outsourced services and other discretionary spending across all segments, but primarily in Carrier Packet Networks (the “2004 Restructuring Plan”). Nortel estimates charges to earnings associated with the 2004 Restructuring Plan in the aggregate of approximately $450 comprised of approximately $220 with respect to the workforce reductions and approximately $230 with respect to the real estate actions. No additional special charges are expected to be recorded with respect to the other cost containment actions. Approximately $160 of the aggregate charges were incurred in 2004 with the remainder expected to be incurred in 2005.

During the three months ended March 31, 2005, Nortel continued to implement these restructuring work plans. Changes in the provisions related to special charges recorded from January 1, 2005 to March 31, 2005 were as follows:

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Regular full-time (“RFT”) employee notifications resulting in special charges for both restructuring plans were as follows:

2001 Restructuring Plan

Three months ended March 31, 2005

During the three months ended March 31, 2005, Nortel recorded revisions of $4 related to prior accruals.

The workforce reduction provision balance was drawn down by cash payments of $2 during the three months ended March 31, 2005. The remaining provision is expected to be substantially drawn down by the end of 2005.

No new contract settlement and lease costs were incurred during the period. During the three months ended March 31, 2005, the provision balance for contract settlement and lease costs was drawn down by cash payments of $40. The remaining provision, net of approximately $241 in estimated sublease income, is expected to be substantially drawn down by the end of 2013.

Three months ended March 31, 2004

During the three months ended March 31, 2004, Nortel recorded special charges of $7, which included revisions of $1 related to prior accruals.

Workforce reduction charges of $6 were related to severance and benefit costs associated with approximately 80 employees notified of termination during the three months ended March 31, 2004 which related entirely to Carrier Packet Networks. During the three months ended March 31, 2004, the workforce reduction provision balance was drawn down by cash payments of $27.

No new contract settlement and lease costs were incurred during the period. Revisions to prior accruals for contract settlement and lease costs of $1 were identified for the three months ended March 31, 2004. During the three months ended March 31, 2004, the provision balance for contract settlement and lease costs was drawn down by cash payments of $57.

In 2003, Nortel initiated activities to exit certain leased facilities and leases for assets no longer used, across all segments. The costs associated with these planned activities have been valued using the estimated fair value method prescribed under SFAS 146. The table below summarizes the total costs estimated to be incurred as a result of these activities, which have met the criteria described in SFAS 146, the balance of these accrued expenses as of March 31, 2005 and the movement in the accrual for the three months ended March 31, 2005. These costs are included in the provision balance above as of March 31, 2005.

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Special charges — by segment

The following table outlines special charges incurred by segment for the three months ended March 31:

As described in the definition of Management EBT in note 4, segment Management EBT does not include special charges. A significant portion of Nortel’s provisions for workforce reductions and contract settlement and lease costs is associated with shared services. These costs have been allocated to the segments in the table above based generally on headcount.

2004 Restructuring Plan

Three months ended March 31, 2005

During the three months ended March 31, 2005, Nortel recorded special charges of $25, which included revisions of $2 related to prior accruals.

Workforce reduction charges of $16, net of revisions to prior accruals of $2, were related to severance and benefit costs associated with approximately 240 employees notified of termination during the three months ended March 31, 2005. The workforce reduction provision balance was drawn down by cash payments of $86 during the three months ended March 31, 2005. The workforce reduction was primarily in the U.S., Canada and EMEA and extended across all segments. The remaining provision is expected to be substantially drawn down by the end of 2005.

Contract settlement and lease costs of $8 consisted of negotiated settlements to cancel or renegotiate contracts and net lease charges related to leased facilities (comprised of office space) and leased furniture that were identified as no longer required primarily in the U.S. and in the Enterprise Networks segment. These lease costs, net of anticipated sublease income, included costs relating to non-cancelable lease terms from the date leased facilities ceased to be used and termination penalties. This provision is expected to be substantially drawn down by the end of 2016.

Special charges — by segment

The following table outlines special charges incurred by segment for the three months ended March 31, 2005:

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6.

Income taxes

During the three months ended March 31, 2005, Nortel recorded a tax expense of $16 on a loss from continuing operations before income taxes, minority interests and equity in net earnings (loss) of associated companies of $22. Nortel recorded a tax expense against the earnings of certain taxable entities and recorded additional valuation allowances against the tax benefit of current period losses of other entities. The tax expense of $16 is primarily related to the drawdown of Nortel’s deferred tax assets and current tax provisions in certain taxable jurisdictions and various corporate minimum and other taxes, partially offset by the recognition of R&D related incentives.

During the three months ended March 31, 2004, Nortel recorded a tax benefit of $9 on earnings from continuing operations before income taxes, minority interests and equity in net earnings (loss) of associated companies of $64. Nortel recorded a tax expense against the earnings of certain taxable entities and recorded additional valuation allowances against the tax benefit of current period losses of other entities. The tax benefit of $9 resulted from the settlement of certain tax audits partially offset by the drawdown of Nortel’s deferred tax assets and current income tax provisions in certain taxable jurisdictions and various corporate minimum related income taxes.

As of March 31, 2005, Nortel’s deferred income tax assets, excluding discontinued operations, were $3,810. The most significant components of the gross deferred income tax assets are the tax benefit of loss carryforwards and investment tax credits and temporary differences related to certain liabilities (primarily provisions, pensions and other post retirement obligations). The majority of the carryforward amounts do not begin to expire until 2017.

The deferred income tax assets are net of a valuation allowance of $3,589. The valuation allowance of $3,589 was recorded in accordance with SFAS No. 109, “Accounting for Income Taxes”, which requires that a valuation allowance be established when it is more likely than not that some portion or all of a company’s deferred tax assets will not be realized. The valuation allowance was determined based on an assessment of the positive and negative evidence of the recoverability of deferred tax assets, which included the carryforward periods attributable to the significant tax assets, Nortel’s history of generating taxable income in its material jurisdictions, and Nortel’s cumulative loss position. Primarily as a result of the losses realized in 2001 and 2002, Nortel determined that it is more likely than not that a portion of its deferred income tax assets will not be realized. Accordingly, a valuation allowance has been recorded against a portion of the assets. However, due to the fact that the majority of the carryforward amounts do not expire in the near future, Nortel’s extended history of profitability in its material tax jurisdictions, exclusive of the 2001 and 2002 losses, and Nortel’s future projections of profitability, Nortel determined that it is more likely than not that the remaining portion of its deferred income tax assets recorded as of March 31, 2005 will be realized.

Nortel is subject to ongoing examinations by certain tax authorities of the jurisdictions in which it operates. Nortel regularly assesses the status of these examinations and the potential for adverse outcomes to determine the adequacy of the provision for income and other taxes. Nortel believes that it has adequately provided for tax adjustments that are probable as a result of any ongoing or future examinations.

7.

Employee benefit plans

Nortel maintains various retirement programs covering substantially all of its employees, consisting of defined benefit, defined contribution and investment plans.

Nortel has four kinds of capital accumulation and retirement programs: balanced capital accumulation and retirement programs (the “Balanced Program”) and investor capital accumulation and retirement programs (the “Investor Program”) available to substantially all of its North American employees; flexible benefits plan, which includes a group personal pension plan (the “Flexible Benefits Plan”), available to substantially all of its employees in the United Kingdom (“U.K.”); and traditional capital accumulation and retirement programs that include defined benefit pension plans (the “Traditional Program”) which are closed to new entrants in the U.K. and portions of which are closed to new entrants in the U.S. and Canada. Although these four kinds of programs represent Nortel’s major retirement programs and may be available to employees in combination and/or as options within a program, Nortel also has smaller pension plan arrangements in other countries.

Nortel also provides other benefits, including post-retirement benefits and post-employment benefits. Employees in the Traditional Program are eligible for their existing Company sponsored post-retirement benefits or a modified version of these benefits, depending on age or years of service. Employees in the Balanced Program are eligible for post-retirement benefits at reduced Company contribution

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levels, while employees in the Investor Program have access to post-retirement benefits by purchasing a Nortel-sponsored retiree health care plan at their own cost.

The following details the net pension expense, all related to continuing operations, for the defined benefit plans for the three months ended:

The following details the net cost components, all related to continuing operations, of post-retirement benefits other than pensions for the three months ended:

During the three months ended March 31, 2005, contributions of $69 were made to the defined benefit plans and $7 to the post-retirement benefit plans. Nortel expects to contribute an additional $23 in 2005 to the defined benefit pension plans for a total contribution of $92, and an additional $22 in 2005 to the post-retirement benefit plans for a total contribution of $29.

8.

Divestitures and change in investments

Divestitures

Manufacturing operations

On June 29, 2004, Nortel announced an agreement with Flextronics International Ltd. (“Flextronics”), regarding the divestiture of substantially all of Nortel’s remaining manufacturing operations, including product integration, testing and repair operations carried out in Calgary and Montreal, Canada and Campinas, Brazil, as well as certain activities related to these locations, including the management of the supply chain, related suppliers and third-party logistics. In Europe, Flextronics has made an offer to purchase similar Nortel operations at Monkstown, Northern Ireland and Chateaudun, France, subject to the completion of the required information and consultation process.

Under the terms of the agreement and offer, Flextronics will also acquire Nortel’s global repair services, as well as certain design assets in Ottawa, Canada and Monkstown related to hardware and embedded software design, and related product verification for certain established optical products.

Nortel and Flextronics have entered into a four year supply agreement for manufacturing services (whereby Flextronics will manage approximately $2,500 of Nortel’s annual cost of revenues) and a three year supply agreement for design services. The portion of the transaction related to the optical design activities in Ottawa and Monkstown was completed on November 1, 2004. On February 8, 2005, Nortel announced the completion of the portion of the transaction related to the manufacturing activities in Montreal. Nortel previously

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reported that the portion of the transaction related to the manufacturing activities in Calgary was expected to close in the second quarter of 2005 and that the balance of the transaction was expected to close on separate dates occurring during the first half of 2005. Nortel and Flextronics are currently discussing the timing of the closing of the balance of the transaction in order to optimize the business transition between the companies. As a result of these discussions, it is now expected that the balance of the transaction, relating to the manufacturing operations in Chateaudun, Calgary and Monkstown, will close by the end of the first quarter of 2006. As a result, Nortel and Flextronics intend to enter into an amendment agreement to extend the term of the original agreement and offer to reflect this updated schedule. These transactions are subject to customary conditions and regulatory approvals.

The successful completion of the agreement and offer with Flextronics will result in the transfer of approximately 2,500 employees from Nortel to Flextronics. As of the first quarter of 2005, Nortel has transferred approximately 1,040 of its employees to Flextronics. Nortel expects to receive cash proceeds ranging from approximately $675 to $725, which will be allocated to each separate closing. Nortel previously announced that the estimated cash proceeds would be received substantially in 2005. Nortel and Flextronics are currently discussing the timing of the cash payments based on the expected change to the original schedule. Such payments will be subject to a number of adjustments, including potential post-closing date asset valuations and potential post-closing indemnity payments. Nortel is expecting proceeds on the sale of this business to exceed the net book value of the assets transferred (including goodwill and foreign currency translation adjustments) and the direct and incremental costs of the transaction (including transition, potential severance, pension adjustments, information technology and real estate costs). The resulting net gain on sale of this business will be recognized once substantially all of the risks and other incidents of ownership have been transferred.

As of March 31, 2005 Nortel has received net cash of approximately $85, transferred approximately $193 of inventory and equipment to Flextronics relating to the closing of the optical design activities in Ottawa and Monkstown and the manufacturing activities in Montreal and recorded deferred charges of approximately $108 and deferred income of approximately $250. As Flextronics has the ability to exercise rights to sell back to Nortel certain inventory and equipment after the expiration of a specified period (up to fifteen months) following each respective closing date, Nortel has retained these assets on its balance sheet to the extent they have not been consumed as part of ongoing operations as at March 31, 2005. Nortel does not expect that such rights will be exercised with respect to any material amount of inventory and/or equipment.

Change in investments

On February 3, 2004, Nortel sold approximately 7 million common shares of Entrust Inc. (“Entrust”) for cash consideration of $33, and recorded a gain of $18 in other income (expense) — net. As a result of this transaction, Nortel no longer holds any equity interest in Entrust.

During March 2004, Nortel sold 1.8 million shares of Arris Group, Inc. (“Arris Group”) for cash consideration of $17, which resulted in a gain of $13, which was recorded in other income (expense) — net. Following this transaction, Nortel owned 3.2 million Arris Group common shares or 4.2 percent of Arris Group outstanding common shares.

Other

On January 20, 2005, Nortel signed a Joint Venture Framework Agreement with China Putian Corporation to establish a joint venture for R&D, manufacture and sale of third generation (3G) mobile telecommunications equipment and products to customers in China. Nortel expects to have a definitive joint venture agreement by June 30, 2005. Nortel anticipates that it will own 49% of the joint venture and China Putian will own 51%.

On January 23, 2005, Nortel signed a non-binding Memorandum of Understanding with LG Electronics, Inc. to establish a joint venture for providing high quality, leading edge telecommunications equipment and networking solutions to Korea and other markets globally. The proposed joint venture is subject to negotiation of final terms and execution of a definitive agreement. Nortel expects to complete this transaction in the second half of 2005. In the proposed joint venture, Nortel anticipates that it will have an ownership interest of 50% plus one share.

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9.

Long-term debt, credit and support facilities

As a result of the delay in the filing of Nortel’s and Nortel Networks Limited’s (“NNL”) 2003 Annual Reports on Form 10-K for the year ended December 31, 2003 (the “2003 Annual Reports”), 2004 Quarterly Reports on Form 10-Q for the first, second and third quarters of 2004 (the “2004 Quarterly Reports”) and 2004 Annual Reports on Form 10-K for the year ended December 31, 2004 (the “2004 Annual Reports”, and together with the 2003 Annual Reports and the 2004 Quarterly Reports, the “Reports”), Nortel and NNL were not in compliance with their obligations to deliver their respective SEC filings to the trustees under Nortel’s and NNL’s public debt indentures as of March 31, 2005. Approximately $1,800 of notes of NNL (or its subsidiaries) and $1,800 of convertible debt securities of Nortel were outstanding under such indentures as of March 31, 2005.

These delays did not result in the automatic event of default and acceleration of the long-term debt of Nortel or NNL and such default and acceleration could not have occurred unless notice of such non-compliance from holders of not less than 25% of the outstanding principal amount of any relevant series of debt securities were provided to Nortel or NNL, as applicable, and Nortel or NNL, as applicable, failed to deliver the relevant report within 90 days after such notice was provided, all in accordance with the terms of the indentures. While such notice could have been given at any time after March 30, 2004 as a result of the delayed filing of the Reports, neither Nortel nor NNL received a notice as of March 31, 2005. See note 18 for additional information relating to the delayed filings.

Approximately $1,275 of the 6.125% Notes are due in February 2006, and have been reclassified from long-term debt to current liabilities. Nortel expects to have sufficient cash to meet this future obligation.

Support facility

On February 14, 2003, Nortel’s principal operating subsidiary, NNL, entered into an agreement with Export Development Canada (“EDC”) regarding arrangements to provide for support, on a secured basis, of certain performance related obligations arising out of normal course business activities for the benefit of Nortel (the “EDC Support Facility”). On December 10, 2004, NNL and EDC amended the terms of the EDC Support Facility by extending the termination date of the EDC Support Facility to December 31, 2006 from December 31, 2005.

On February 14, 2003, NNL’s obligations under the EDC Support Facility became secured on an equal and ratable basis under the security agreements entered into by NNL and various of its subsidiaries that pledged substantially all of the assets of NNL in favor of the banks under the NNL and Nortel Networks Inc. (“NNI”) $750 April 2000 five year credit facilities (the “Five Year Facilities”) and the holders of Nortel’s public debt securities. This security became effective in favor of the banks and the public debt holders on April 4, 2002. For additional information relating to the security agreements, see note 20.

The EDC Support Facility provides up to $750 in support, all on an uncommitted basis as of March 31, 2005. As of March 31, 2005, there was approximately $213 of outstanding support utilized under the EDC Support Facility, approximately $145 of which was outstanding under the revolving small bond sub-facility.

The delayed filing of the Reports with the SEC, the trustees under Nortel’s and NNL’s public debt indentures and EDC gave EDC the right to (i) terminate its commitments under the EDC Support Facility, relating to certain of Nortel’s performance related obligations arising out of normal course business activities, and (ii) exercise certain rights against the collateral pledged under related security agreements or require NNL to cash collateralize all existing support.

Throughout 2004 and into 2005, NNL obtained waivers from EDC with respect to these matters to permit continued access to the EDC Support Facility in accordance with its terms while Nortel and NNL worked to complete their filing obligations. The waivers also applied to certain related breaches under the EDC Support Facility relating to the delayed filings and the restatements and revisions to Nortel’s and NNL’s prior financial results (the “Related Breaches”). In connection with such waivers, EDC reclassified the previously committed $300 revolving small bond sub-facility of the EDC Support Facility as uncommitted support during the applicable waiver period. The $300 revolving small bond sub-facility will not become committed support until all delayed filings have been filed with the SEC, the trustees under Nortel’s and NNL’s public debt indentures and EDC and NNL obtains a permanent waiver of the Related Breaches.

On January 14, 2005 and February 15, 2005, NNL obtained waivers from EDC of certain defaults and the Related Breaches by NNL under the EDC Support Facility relating to the delayed filings of Nortel’s and NNL’s financial reports. Both of these waivers expired and on March 15, 2005, NNL obtained a new waiver from EDC (the “March Waiver”).

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The March Waiver remained in effect until the earliest of certain events including the date on which Nortel and NNL filed their respective Quarterly Reports on Form 10-Q for the third quarter of 2004 and the 2004 Annual Reports, or April 30, 2005. As previously announced, Nortel and NNL have filed the 2004 Quarterly Reports and the 2004 Annual Reports. See note 18 for additional information relating to the delayed filings.

10.

Guarantees

Nortel has entered into agreements that contain features which meet the definition of a guarantee under FASB Interpretation No. 45, “Guarantor’s Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantees of Indebtedness of Others — an Interpretation of FASB Statements No. 5, 57 and 107 and Rescission of FASB Interpretation No. 34” (“FIN 45”). FIN 45 defines a guarantee as a contract that contingently requires Nortel to make payments (either in cash, financial instruments, other assets, common shares of Nortel Networks Corporation or through the provision of services) to a third party based on changes in an underlying economic characteristic (such as interest rates or market value) that is related to an asset, a liability or an equity security of the guaranteed party or a third party’s failure to perform under a specified agreement. A description of the major types of Nortel’s outstanding guarantees as of March 31, 2005 is provided below:

(a)

Business sale and business combination agreements

In connection with agreements for the sale of portions of its business, including certain discontinued operations, Nortel has typically retained the liabilities of a business which relate to events occurring prior to its sale, such as tax, environmental, litigation and employment matters. Nortel generally indemnifies the purchaser of a Nortel business in the event that a third party asserts a claim against the purchaser that relates to a liability retained by Nortel. Some of these types of guarantees have indefinite terms while others have specific terms extending to June 2008.

Nortel also entered into guarantees related to the escrow of shares in business combinations in prior periods. These types of agreements generally include indemnities that require Nortel to indemnify counterparties for loss incurred from litigation that may be suffered by counterparties arising under such agreements. These types of indemnities apply over a specified period of time from the date of the business combinations and do not provide for any limit on the maximum potential amount.

Nortel is unable to estimate the maximum potential liability for these types of indemnification guarantees as the business sale agreements generally do not specify a maximum amount and the amounts are dependent upon the outcome of future contingent events, the nature and likelihood of which cannot be determined.

Historically, Nortel has not made any significant indemnification payments under such agreements and no significant liability has been accrued in the consolidated financial statements with respect to the obligations associated with these guarantees.

In conjunction with the sale of a subsidiary to a third party, Nortel guaranteed to the purchaser that specified annual volume levels would be achieved by the business sold over a ten year period ending December 31, 2007. The maximum amount that Nortel may be required to pay under the volume guarantee as of March 31, 2005 is $9. A liability of $8 has been accrued in the consolidated financial statements with respect to the obligation associated with this guarantee as of March 31, 2005.

(b)

Intellectual property indemnification obligations

Nortel has periodically entered into agreements with customers and suppliers that include limited intellectual property indemnification obligations that are customary in the industry. These types of guarantees typically have indefinite terms and generally require Nortel to compensate the other party for certain damages and costs incurred as a result of third party intellectual property claims arising from these transactions.

The nature of the intellectual property indemnification obligations generally prevents Nortel from making a reasonable estimate of the maximum potential amount it could be required to pay to its customers and suppliers. Historically, Nortel has not made any significant indemnification payments under such agreements. A liability of $6 has been accrued in the consolidated financial statements with respect to the obligations associated with these guarantees as of March 31, 2005.

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(c)

Lease agreements

Nortel has entered into agreements with its lessors that guarantee the lease payments of certain assignees of its facilities to lessors. Generally, these lease agreements relate to facilities Nortel vacated prior to the end of the term of its lease. These lease agreements require Nortel to make lease payments throughout the lease term if the assignee fails to make scheduled payments. Most of these lease agreements also require Nortel to pay for facility restoration costs at the end of the lease term if the assignee fails to do so. These lease agreements have expiration dates through June 2015. The maximum amount that Nortel may be required to pay under these types of agreements is $46 as of March 31, 2005. Nortel generally has the ability to attempt to recover such lease payments from the defaulting party through rights of subrogation.

Historically, Nortel has not made any significant payments under these types of guarantees and no significant liability has been accrued in the consolidated financial statements with respect to the obligations associated with these guarantees.

(d)

Third party debt agreements

Nortel has guaranteed the debt of certain customers. These third party debt agreements require Nortel to make debt payments throughout the term of the related debt instrument if the customer fails to make scheduled debt payments. These third party debt agreements have expiration dates extending to May 2012. The maximum amount that Nortel may be required to pay under these types of debt agreements is $7 as of March 31, 2005. Under most such arrangements, the Nortel guarantee is secured, usually by the assets being purchased or financed. No liability has been accrued in the consolidated financial statements with respect to the obligations associated with these financial guarantees as of March 31, 2005.

(e)

Indemnification of banks and agents under EDC Support Facility and security agreements

Nortel has agreed to indemnify EDC under the EDC Support Facility against any legal action brought against EDC that relates to the provision of support under the EDC Support Facility. Nortel has also agreed to indemnify the collateral agent under the security agreements against any legal action brought against the collateral agent in connection with the collateral pledged under the security agreements. These indemnifications generally apply to issues that arise during the term of the credit and support facilities, or for as long as the security agreements remain in effect (see notes 9 and 18).

Nortel is unable to estimate the maximum potential liability for these types of indemnification guarantees as the agreements typically do not specify a maximum amount and the amounts are dependent upon the outcome of future contingent events, the nature and likelihood of which cannot be determined at this time.

Historically, Nortel has not made any significant indemnification payments under such agreements and no significant liability has been accrued in the consolidated financial statements with respect to the obligations associated with these indemnification guarantees.

Nortel has agreed to indemnify certain of its counterparties in certain receivables securitization transactions. The indemnifications provided to counterparties in these types of transactions may require Nortel to compensate counterparties for costs incurred as a result of changes in laws and regulations (including tax legislation) or in the interpretations of such laws and regulations, or as a result of regulatory penalties that may be suffered by the counterparty as a consequence of the transaction. Certain receivables securitization transactions include indemnifications requiring the repurchase of the receivables if the particular transaction becomes invalid. As of March 31, 2005, Nortel had approximately $205 of securitized receivables which were subject to repurchase under this provision, in which case Nortel would assume all rights to collect such receivables. The indemnification provisions generally expire upon expiration of the securitization agreements, which extend through 2006, or collection of the receivable amounts by the counterparty.

Nortel is generally unable to estimate the maximum potential liability for these types of indemnification guarantees as certain agreements do not specify a maximum amount and the amounts are dependent upon the outcome of future contingent events, the nature and likelihood of which cannot be determined at this time.

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Historically, Nortel has not made any significant indemnification payments or receivable repurchases under such agreements and no significant liability has been accrued in the consolidated financial statements with respect to the obligations associated with these guarantees.

(f)

Other indemnification agreements

Nortel has also entered into other agreements that provide indemnifications to counterparties in certain transactions including investment banking agreements, guarantees related to the administration of capital trust accounts, guarantees related to the administration of employee benefit plans, indentures for its outstanding public debt and asset sale agreements (other than the business sale agreements noted above). These indemnification agreements generally require Nortel to indemnify the counterparties for costs incurred as a result of changes in laws and regulations (including tax legislation) or in the interpretations of such laws and regulations and/or as a result of losses from litigation that may be suffered by the counterparties arising from the transactions. These types of indemnification agreements normally extend over an unspecified period of time from the date of the transaction and do not typically provide for any limit on the maximum potential payment amount.

The nature of such agreements prevents Nortel from making a reasonable estimate of the maximum potential amount it could be required to pay to its counterparties. The difficulties in assessing the amount of liability result primarily from the unpredictability of future changes in laws, the inability to determine how laws apply to counterparties and the lack of limitations on the potential liability.

Historically, Nortel has not made any significant indemnification payments under such agreements and no significant liability has been accrued in the consolidated financial statements with respect to the obligations associated with these guarantees.

Product warranties

The following summarizes the accrual for product warranties that was recorded as part of other accrued liabilities in the consolidated balance sheet as of March 31, 2005:

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11.

Commitments

Bid, performance related and other bonds

Nortel has entered into bid, performance related and other bonds associated with various contracts. Bid bonds generally have a term of less than twelve months, depending on the length of the bid period for the applicable contract. Other bonds primarily relate to warranty, rental, real estate and customs contracts. Performance related and other bonds generally have a term of twelve months and are typically renewed, as required, over the term of the applicable contract. The various contracts to which these bonds apply generally have terms ranging from two to five years. Any potential payments which might become due under these bonds would be related to Nortel’s non-performance under the applicable contract. Historically, Nortel has not had to make material payments under these types of bonds and does not anticipate that any material payments will be required in the future. The following table sets forth the maximum potential amount of future payments under bid, performance related and other bonds, net of the corresponding restricted cash and cash equivalents, as of the following dates:

Venture capital financing

Nortel has entered into agreements with selected venture capital firms where the venture capital firms make and manage investments in start-ups and emerging enterprises. The agreements require Nortel to fund requests for additional capital up to its commitments when and if requests for additional capital are solicited by the venture capital firm. Nortel had remaining commitments, if requested, of $15 as of March 31, 2005. These commitments expire at various dates through 2012.

12.

Financing arrangements

Customer financing

Pursuant to certain financing agreements, Nortel is committed to provide future financing in connection with purchases of Nortel’s products and services. Commitments to extend future financing generally have conditions for funding, fixed expiration or termination dates and specific interest rates and purposes. Nortel attempts to limit its financing credit risk by utilizing an internal credit committee that monitors the credit exposure of Nortel. The following table sets forth customer financing related information and commitments, excluding discontinued operations, as of the following dates:

		During the three months ended March 31, 2005 and 2004, net customer financing bad debt expense as a result of settlements and adjustments to other existing provisions was not significant.
		During the three months ended March 31, 2005 and 2004, Nortel entered into certain agreements to restructure and/or settle various customer financing and related receivables, including rights to accrued interest. As a result of these transactions, Nortel received

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		cash consideration of approximately $110 ($36 of the proceeds was included in discontinued operations) and $15 to settle outstanding receivables with a net carrying value of $100 ($33 of the net carrying value was included in discontinued operations) and $14, respectively.
		During the three months ended March 31, 2005 and 2004, Nortel reduced undrawn customer financing commitments by $5 and $114, respectively, as a result of the expiration or cancellation of commitments and changing customer business plans. As of March 31, 2005, all undrawn commitments were available for funding under the terms of the financing agreements.

Consolidation of variable interest entities

		Certain lease financing transactions of Nortel were structured through single transaction VIEs that did not have sufficient equity at risk as defined in FIN 46R. Effective July 1, 2003, Nortel prospectively began consolidating two VIEs for which Nortel was considered the primary beneficiary following the guidance of FIN 46, “Consolidation of Variable Interest Entities — an interpretation of Accounting Research Bulletin No. 51, ‘Consolidated Financial Statements’” (“FIN 46”), on the basis that Nortel retained certain risks associated with guaranteeing recovery of the unamortized principal balance of the VIEs’ debt, which represented the majority of the risks associated with the respective VIEs’ activities. The amount of the guarantees will be adjusted over time as the underlying debt matures. During the three months ended March 31, 2004, the debt related to one of the VIEs was extinguished, and as a result, consolidation of this VIE was no longer required. As of March 31, 2005, Nortel’s consolidated balance sheet included $94 of long-term debt and $93 of plant and equipment — net related to the remaining VIE. These amounts represented both the collateral and maximum exposure to loss as a result of Nortel’s involvement with the VIE.
		As of March 31, 2005, Nortel did not have any variable interests related to transfers of financial assets. Nortel has other financial interests and contractual arrangements which would meet the definition of a variable interest under FIN 46R, including investments in other companies and joint ventures, customer financing arrangements, and guarantees and indemnification arrangements. As of March 31, 2005, none of these interests or arrangements were considered significant variable interests and, therefore, did not meet the requirements for consolidation or disclosure under FIN 46R.

13.

Capital stock and stock-based compensation plans

Common shares

Nortel Networks Corporation is authorized to issue an unlimited number of common shares without nominal or par value. The outstanding number of common shares and prepaid forward purchase contracts included in shareholders’ equity consisted of the following as of the following date:

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At the Nortel annual and special shareholders’ meeting on April 24, 2003, shareholders approved the reconfirmation and amendment of Nortel’s shareholder rights plan, which will expire at the annual meeting of shareholders to be held in 2006 unless it is reconfirmed at that time. Under the rights plan, Nortel issues one right for each Nortel Networks Corporation common share outstanding. These rights become exercisable upon the occurrence of certain events associated with an unsolicited takeover bid.

Stock-based compensation plans

		On March 10, 2004, Nortel announced, among other things, that it was likely that Nortel would need to revise certain previously announced results and restate previously filed financial results for one or more earlier periods. As a result of Nortel’s March 10, 2004 announcement, Nortel suspended as of March 10, 2004: the purchase of Nortel Networks Corporation common shares under the stock purchase plans for eligible employees in eligible countries, and a stock purchase plan for eligible unionized employees in Canada (collectively, the “ESPPs”); the exercise of outstanding options granted under the Nortel Networks Corporation 2000 Stock Option Plan (the “2000 Plan”); Nortel Networks Corporation 1986 Stock Option Plan As Amended and Restated (the “1986 Plan”), and the grant of any additional options under those plans, or the exercise of outstanding options granted under employee stock option plans previously assumed by Nortel in connection with mergers and acquisitions; and the purchase of units in a Nortel stock fund or purchase of Nortel Networks Corporation common shares under Nortel’s defined contribution and investment plans, until such time, at the earliest, that Nortel and NNL are in compliance with U.S. and Canadian regulatory securities filing requirements.
		Effective January 1, 2003, Nortel elected to adopt the fair value based method for measurement and recognition of all stock-based compensation prospectively for all awards granted, modified, or settled on or after January 1, 2003 in accordance with SFAS 148. Prior to January 1, 2003, Nortel, as permitted under SFAS 123, applied the intrinsic value method under Accounting Principles Board Opinion No. 25, “Accounting for Stock Issued to Employees”, and related interpretations in accounting for its employee stock-based compensation plans.
		The fair value at grant date of stock options is estimated using the Black-Scholes-Merton option-pricing model. Compensation expense is recognized on a straight-line basis over the stock option vesting period. Adjustments to compensation expense due to not meeting employment vesting requirements are accounted for in the period when they occur.

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Pro forma disclosure

Had Nortel applied the fair value method to all stock-based compensation awards in all periods, reported net earnings (loss) and earnings (loss) per common share would have been adjusted to the pro forma amounts indicated below for the three months ended:

     The following table presents stock-based compensation recorded for the three months ended:

During the three months ended March 31, 2004, approximately 38 million stock options were granted. No stock options were granted during the three months ended March 31, 2005. The following weighted-average assumptions were used in computing the fair value of stock options for purposes of expense recognition and pro forma disclosures, as applicable, for the three months ended:

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14.

Earnings (loss) per common share

The following table details the weighted-average number of Nortel Networks Corporation common shares outstanding for the purposes of computing basic and diluted earnings (loss) per common share for the three months ended:

15.

Comprehensive income (loss)

The following are the components of comprehensive income (loss), net of tax, for each of the three months ended:

16.

Related party transactions

In the ordinary course of business, Nortel purchases certain inventory for its Carrier Packet Networks business from Bookham, Inc. (“Bookham”), a related party due to Nortel’s equity interest in Bookham. Bookham is a sole supplier of key optical components to Nortel’s optical networks solutions in its Carrier Packet Networks segment. During the three months ended March 31, 2005 and 2004, Nortel’s aggregate purchases from Bookham were $4 and $19, respectively. As of March 31, 2005 and December 31, 2004, accounts payable to Bookham were nil and $5, respectively. Nortel also has certain notes receivable due from Bookham with a carrying amount of $19 and $20 as of March 31, 2005 and December 31, 2004, respectively.

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		On December 2, 2004, Nortel and Bookham entered into a restructuring agreement which, among other changes, extended the maturity date of a senior secured note (the “Series B Note”) by one year from November 8, 2005 to November 8, 2006, and eliminated the conversion feature of a senior unsecured note (the “Series A Note”). Bookham also agreed to secure the Series A Note, provide additional collateral for the Series A Note and the Series B Note, and provide Nortel with other debt protection covenants.
		In February 2005, Nortel agreed to waive until November 6, 2006 the requirement under the Series A Note and Series B Note for Bookham to maintain a minimum cash balance. In May 2005, Nortel entered into an amendment to adjust the prepayment provisions of these notes and received additional collateral for these notes. In May 2005, Nortel entered into an amendment to its supply agreement with Bookham to include for a twelve month period price increases for certain products, and acceleration of certain planned purchase orders and invoice payment terms. These May 2005 amendments were agreed to by Nortel to provide Bookham with financial flexibility to continue the supply of optical components for Nortel’s Carrier Packet Networks products.

17.

Contingencies

		Subsequent to the February 15, 2001 announcement in which Nortel provided revised guidance for financial performance for the 2001 fiscal year and the first quarter of 2001, Nortel and certain of its then current officers and directors were named as defendants in more than twenty-five purported class action lawsuits. These lawsuits in the U.S. District Courts for the Eastern District of New York, for the Southern District of New York and for the District of New Jersey and in courts in the provinces of Ontario, Quebec and British Columbia in Canada, on behalf of shareholders who acquired Nortel Networks Corporation securities as early as October 24, 2000 and as late as February 15, 2001, allege, among other things, violations of U.S. federal and Canadian provincial securities laws. These matters also have been the subject of review by Canadian and U.S. securities regulatory authorities. On May 11, 2001, the defendants filed motions to dismiss and/or stay in connection with the three proceedings in Quebec primarily based on the factual allegations lacking substantial connection to Quebec and the inclusion of shareholders resident in Quebec in the class claimed in the Ontario lawsuit. The plaintiffs in two of these proceedings in Quebec obtained court approval for discontinuances of their proceedings on January 17, 2002. The motion to dismiss and/or stay the third proceeding was heard on November 6, 2001 and the court deferred any determination on the motion to the judge who will hear the application for authorization to commence a class proceeding. On December 6, 2001, the defendants filed a motion seeking leave to appeal that decision. The motion for leave to appeal was dismissed on March 11, 2002. On October 16, 2001, an order in the Southern District of New York was filed consolidating twenty-five of the related U.S. class action lawsuits into a single case, appointing class plaintiffs and counsel for such plaintiffs. The plaintiffs served a consolidated amended complaint on January 18, 2002. On December 17, 2001, the defendants in the British Columbia action served notice of a motion requesting the court to decline jurisdiction and to stay all proceedings on the grounds that British Columbia is an inappropriate forum. The motion has been adjourned at the plaintiffs’ request to a future date to be set by the parties.
		A class action lawsuit against Nortel was also filed in the U.S. District Court for the Southern District of New York on behalf of shareholders who acquired the securities of JDS Uniphase Corporation (“JDS”) between January 18, 2001 and February 15, 2001, alleging violations of the same U.S. federal securities laws as the above-noted lawsuits.
		On April 1, 2002, Nortel filed a motion to dismiss both the above consolidated U.S. shareholder class action and the above JDS shareholder class action complaints on the grounds that they failed to state a cause of action under U.S. federal securities laws. With respect to the JDS shareholder class action complaint, Nortel also moved to dismiss on the separate basis that JDS shareholders lacked standing to sue Nortel. On January 3, 2003, the District Court granted the motion to dismiss the JDS shareholder class action complaint and denied the motion to dismiss the consolidated U.S. class action complaint. Plaintiffs appealed the dismissal of the JDS shareholder class action complaint. On November 19, 2003, oral argument was held before the U.S. Court of Appeals for the Second Circuit on the JDS shareholders’ appeal of the dismissal of their complaint. On May 19, 2004, the Second Circuit issued an opinion affirming the dismissal of the JDS shareholder class action complaint and on July 14, 2004 the Second Circuit denied plaintiffs’ motion for rehearing. On October 12, 2004, the plaintiffs filed a petition for writ of certiorari in the U.S. Supreme Court. On November 12, 2004, the defendants filed Brief for the Respondents in Opposition, and on November 22, 2004, the plaintiffs filed Reply to Brief in Opposition. On January 10, 2005, the U.S. Supreme Court denied the petition for writ of certiorari. With respect to the consolidated U.S. shareholder class action, the plaintiffs served a motion for class certification on March 21, 2003. On May 30, 2003, the defendants served an opposition to the motion for class certification. Plaintiffs’ reply was served on August 1, 2003. The District Court held oral arguments on September 3, 2003 and issued an order granting class certification on September 5, 2003. On September 23, 2003, the defendants filed a motion in the Second Circuit for permission to appeal the class certification decision. The plaintiffs’ opposition to the

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		motion was filed on October 2, 2003. On November 24, 2003, the Second Circuit denied the motion. On March 10, 2004, the District Court approved the form of notice to the class which was published and mailed.
		On July 17, 2002, a new purported class action lawsuit (the “Ontario Claim”) was filed in the Ontario Superior Court of Justice, Commercial List, naming Nortel, certain of its current and former officers and directors and its auditors as defendants. The factual allegations in the Ontario Claim are substantially similar to the allegations in the consolidated amended complaint filed in the U.S. District Court described above. The Ontario Claim is on behalf of all Canadian residents who purchased Nortel Networks Corporation securities (including options on Nortel Networks Corporation securities) between October 24, 2000 and February 15, 2001. The plaintiffs claim damages of Canadian $5,000, plus punitive damages in the amount of Canadian $1,000, prejudgment and postjudgment interest and costs of the action. On September 23, 2003, the Court issued an order allowing the plaintiffs to proceed to amend the Ontario Claim and requiring that the plaintiffs serve class certification materials by December 15, 2003. On September 24, 2003, the plaintiffs filed a notice of discontinuance of the original action filed in Ontario. On December 12, 2003, plaintiffs’ counsel requested an extension of time to January 21, 2004 to deliver class certification materials. On January 21, 2004, plaintiffs’ counsel advised the Court that the two representative plaintiffs in the action no longer wished to proceed, but counsel was prepared to deliver draft certification materials pending the replacement of the representative plaintiffs. On February 19, 2004, the plaintiffs’ counsel advised the Court of a potential new representative plaintiff. On February 26, 2004, the defendants requested the Court to direct the plaintiffs’ counsel to bring a motion to permit the withdrawal of the current representative plaintiffs and to substitute the proposed representative plaintiff. On June 8, 2004, the Court signed an order allowing a Second Fresh as Amended Statement of Claim that substituted one new representative plaintiff, but did not change the substance of the prior claim.
		A purported class action lawsuit was filed in the U.S. District Court for the Middle District of Tennessee on December 21, 2001, on behalf of participants and beneficiaries of the Nortel Long-Term Investment Plan (the “Plan”) at any time during the period of March 7, 2000 through the filing date and who made or maintained Plan investments in Nortel Networks Corporation common shares, under the Employee Retirement Income Security Act (“ERISA”) for Plan-wide relief and alleging, among other things, material misrepresentations and omissions to induce Plan participants to continue to invest in and maintain investments in Nortel Networks Corporation common shares in the Plan. A second purported class action lawsuit, on behalf of the Plan and Plan participants for whose individual accounts the Plan purchased Nortel Networks Corporation common shares during the period from October 27, 2000 to February 15, 2001 and making similar allegations, was filed in the same court on March 12, 2002. A third purported class action lawsuit, on behalf of persons who are or were Plan participants or beneficiaries at any time since March 1, 1999 to the filing date and making similar allegations, was filed in the same court on March 21, 2002. The first and second purported class action lawsuits were consolidated by a new purported class action complaint, filed on May 15, 2002 in the same court and making similar allegations, on behalf of Plan participants and beneficiaries who directed the Plan to purchase or hold shares of certain funds, which held primarily Nortel Networks Corporation common shares, during the period from March 7, 2000 through December 21, 2001. On September 24, 2002, plaintiffs in the consolidated action filed a motion to consolidate all the actions and to transfer them to the U.S. District Court for the Southern District of New York. The plaintiffs then filed a motion to withdraw the pending motion to consolidate and transfer. The withdrawal was granted by the District Court on December 30, 2002. A fourth purported class action lawsuit, on behalf of the Plan and Plan participants for whose individual accounts the Plan held Nortel Networks Corporation common shares during the period from March 7, 2000 through March 31, 2001 and making similar allegations, was filed in the U.S. District Court for the Southern District of New York on March 12, 2003. On March 18, 2003, plaintiffs in the fourth purported class action filed a motion with the Judicial Panel on Multidistrict Litigation to transfer all the actions to the U.S. District Court for the Southern District of New York for coordinated or consolidated proceedings pursuant to 28 U.S.C. section 1407. On June 24, 2003, the Judicial Panel on Multidistrict Litigation issued a transfer order transferring the Southern District of New York action to the U.S. District Court for the Middle District of Tennessee (the “Consolidated ERISA Action”). On September 12, 2003, the plaintiffs in all the actions filed a consolidated class action complaint. On October 28, 2003, the defendants filed a motion to dismiss the complaint and a motion to stay discovery pending disposition of the motion to dismiss. On March 30, 2004, the plaintiffs filed a motion for certification of a class consisting of participants in, or beneficiaries of, the Plan who held shares of the Nortel Stock Fund during the period from March 7, 2000 through March 31, 2001. On April 27, 2004, the Court granted the defendants’ motion to stay discovery pending resolution of defendants’ motion to dismiss. On June 15, 2004, the plaintiffs filed a First Amended Consolidated Class Action Complaint that added additional current and former officers and employees as defendants and expanded the purported class period to extend from March 7, 2000 through to June 15, 2004.
		Subsequent to the March 10, 2004 announcement in which Nortel indicated it was likely that it would need to revise its previously announced unaudited results for the year ended December 31, 2003, and the results reported in certain of its quarterly reports for 2003, and to restate its previously filed financial results for one or more earlier periods, Nortel and certain of its then current and former

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		officers and directors were named as defendants in 27 purported class action lawsuits. These lawsuits in the U.S. District Court for the Southern District of New York on behalf of shareholders who acquired Nortel Networks Corporation securities as early as February 16, 2001 and as late as May 15, 2004, allege, among other things, violations of U.S. federal securities laws. These matters are also the subject of investigations by Canadian and U.S. securities regulatory and criminal investigative authorities. On June 30, 2004, the Court signed Orders consolidating the 27 class actions and appointing lead plaintiffs and lead counsel. The plaintiffs filed a consolidated class action complaint on September 10, 2004, alleging a class period of April 24, 2003 through and including April 27, 2004. On November 5, 2004, Nortel Networks Corporation and the Audit Committee Defendants filed a motion to dismiss the consolidated class action complaint. On January 18, 2005, the lead plaintiffs, Nortel and the Audit Committee Defendants reached an agreement in which Nortel would withdraw its motion to dismiss and plaintiffs would dismiss Count II of the complaint which asserts a claim against the Audit Committee Defendants. On May 13, 2005, the plaintiffs filed a motion for class certification.
		On April 5, 2004, Nortel announced that the SEC had issued a formal order of investigation in connection with Nortel’s previous restatement of its financial results for certain periods, as announced in October 2003, and Nortel’s announcements in March 2004 regarding the likely need to revise certain previously announced results and restate previously filed financial results for one or more periods. The matter had been the subject of an informal SEC inquiry. On April 13, 2004, Nortel announced that it had received a letter from the staff of the Ontario Securities Commission (“OSC”) advising that there is an OSC Enforcement Staff investigation into the same matters that are the subject of the SEC investigation.
		On May 14, 2004, Nortel announced that it had received a federal grand jury subpoena for the production of certain documents, including financial statements and corporate, personnel and accounting records, in connection with an ongoing criminal investigation being conducted by the U.S. Attorney’s Office for the Northern District of Texas, Dallas Division.
		On May 18, 2004, a purported class action lawsuit was filed in the U.S. District Court for the Middle District of Tennessee on behalf of individuals who were participants and beneficiaries of the Plan at any time during the period of December 23, 2003 through the filing date and who made or maintained Plan investments in Nortel Networks Corporation common shares, under the ERISA for Plan-wide relief and alleging, among other things, breaches of fiduciary duty. On September 3, 2004, the Court signed a stipulated order consolidating this action with the Consolidated ERISA Action described above. On June 16, 2004, a second purported class action lawsuit, on behalf of the Plan and Plan participants for whose individual accounts the Plan purchased Nortel Networks Corporation common shares during the period from October 24, 2000 to June 16, 2004, and making similar allegations, was filed in the U.S. District Court for the Southern District of New York. On August 6, 2004, the Judicial Panel on Multidistrict Litigation issued a conditional transfer order to transfer this action to the U.S. District Court for the Middle District of Tennessee for coordinated or consolidated proceedings pursuant to 28 U.S.C. section 1407 with the Consolidated ERISA Action described above. On August 20, 2004, plaintiffs filed a notice of opposition to the conditional transfer order with the Judicial Panel. On December 6, 2004, the Judicial Panel denied the opposition and ordered the action transferred to the U.S. District Court for the Middle District of Tennessee for coordinated or consolidated proceedings with the Consolidated ERISA Action described above. On January 3, 2005, this action was received in the U.S. District Court for the Middle District of Tennessee and consolidated with the Consolidated ERISA Action described above.
		On July 28, 2004, Nortel and NNL, and certain directors and officers, and certain former directors and officers, of Nortel and NNL, were named as defendants in a purported class proceeding in the Ontario Superior Court of Justice on behalf of shareholders who acquired Nortel Networks Corporation securities as early as November 12, 2002 and as late as July 28, 2004. This lawsuit alleges, among other things, breaches of trust and fiduciary duty, oppressive conduct and misappropriation of corporate assets and trust property in respect of the payment of cash bonuses to executives, officers and employees in 2003 and 2004 under the Nortel Return to Profitability bonus program and seeks damages of Canadian $250 and an order under the Canada Business Corporations Act directing that an investigation be made respecting these bonus payments.
		On July 30, 2004, a shareholders’ derivative complaint was filed in the U.S. District Court for the Southern District of New York against certain directors and officers, and certain former directors and officers, of Nortel alleging, among other things, breach of fiduciary duties owed to Nortel during the period from 2000 to 2003 including by causing Nortel to engage in unlawful conduct or failing to prevent such conduct; causing Nortel to issue false statements; and violating the law. On February 14, 2005, the defendants filed motions to dismiss the derivative complaint. On April 29, 2005, the plaintiffs filed an opposition to the motions to dismiss.

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		On August 16, 2004, Nortel received a letter from the Integrated Market Enforcement Team of the Royal Canadian Mounted Police (“RCMP”) advising Nortel that the RCMP would be commencing a criminal investigation into Nortel’s financial accounting situation.
		On February 16, 2005, a motion for authorization to institute a class action on behalf of residents of Québec, who purchased Nortel securities between January 29, 2004 and March 15, 2004, was filed in the Québec Superior Court naming Nortel as a defendant. The motion alleges that Nortel made misrepresentations about 2003 financial results.
		On March 9, 2005, Nortel and certain of its current and former officers and directors and its auditors were named as defendants in a purported class action proceeding filed in the Ontario Superior Court of Justice, Commercial List, on behalf of all Canadian residents who purchased Nortel Networks Corporation securities from April 24, 2003 to April 27, 2004. This lawsuit alleges, among other things, negligence, misrepresentations, oppressive conduct, insider trading and violations of Canadian corporation and competition laws in connection with Nortel’s 2003 financial results and seeks damages of Canadian $3,000, plus punitive damages in the amount of Canadian $1,000, prejudgment and postjudgment interest and costs of the action.
		Except as otherwise described herein, in each of the matters described above, the plaintiffs are seeking an unspecified amount of monetary damages.
		Nortel is also a defendant in various other suits, claims, proceedings and investigations which arise in the normal course of business.
		Nortel is unable to ascertain the ultimate aggregate amount of monetary liability or financial impact to Nortel of the above matters which, unless otherwise specified, seek damages from the defendants of material or indeterminate amounts or could result in fines and penalties. Nortel cannot determine whether these actions, suits, claims and proceedings will, individually or collectively, have a material adverse effect on the business, results of operations, financial condition and liquidity of Nortel. Nortel and any named directors and officers of Nortel intend to vigorously defend these actions, suits, claims and proceedings. Nortel will continue to cooperate fully with all authorities in connection with the regulatory and criminal investigations.

Environmental matters

		Nortel’s operations are subject to a wide range of environmental laws in various jurisdictions around the world. Nortel seeks to operate its business in compliance with such laws. In 2004, Nortel became subject to new European product content laws and product takeback and recycling requirements that will require full compliance by 2006. It is expected that these laws will require Nortel to incur additional compliance costs. Although costs relating to environmental matters have not resulted in a material adverse effect on the business, results of operations, financial condition and liquidity in the past, there can be no assurance that Nortel will not be required to incur such costs in the future. Nortel has a corporate environmental management system standard and an environmental program to promote such compliance. Moreover, Nortel has a periodic, risk-based, integrated environment, health and safety audit program.
		Nortel’s environmental program focuses its activities on design for the environment, supply chain and packaging reduction issues. Nortel works with its suppliers and other external groups to encourage the sharing of non-proprietary information on environmental research.
		Nortel is exposed to liabilities and compliance costs arising from its past and current generation, management and disposal of hazardous substances and wastes. As of March 31, 2005, the accruals on the consolidated balance sheet for environmental matters were $30. Based on information available as of March 31, 2005, management believes that the existing accruals are sufficient to satisfy probable and reasonably estimable environmental liabilities related to known environmental matters. Any additional liabilities that may result from these matters, and any additional liabilities that may result in connection with other locations currently under investigation, are not expected to have a material adverse effect on the business, results of operations, financial condition and liquidity of Nortel.
		Nortel has remedial activities under way at 12 sites which are either currently or previously owned or occupied facilities. An estimate of Nortel’s anticipated remediation costs associated with all such sites, to the extent probable and reasonably estimable, is included in the environmental accruals referred to above in an approximate amount of $30.
		Nortel is also listed as a potentially responsible party under the U.S. Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”) at six Superfund sites in the U.S. An estimate of Nortel’s share of the anticipated remediation costs associated

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		with such Superfund sites is expected to be de minimis and is included in the environmental accruals of $30 referred to above.
		Liability under CERCLA may be imposed on a joint and several basis, without regard to the extent of Nortel’s involvement. In addition, the accuracy of Nortel’s estimate of environmental liability is affected by several uncertainties such as additional requirements which may be identified in connection with remedial activities, the complexity and evolution of environmental laws and regulations, and the identification of presently unknown remediation requirements. Consequently, Nortel’s liability could be greater than its current estimate.

Other

		In August 2004, Nortel entered into a contract with Bharat Sanchar Nigram Limited (“BSNL”) to establish a wireless network in India for total expected revenues of approximately $500 to be recognized substantially in 2005. This resulted in a project loss of approximately $160 in 2004. Nortel expects to record an additional loss of approximately $20 substantially in the second quarter of 2005 as a result of additional orders received in that period. The losses on this contract are primarily driven by the pricing pressures as a result of the competitive nature of India’s telecom market and also Nortel’s start up costs to become a significant GSM vendor in this market.
		In addition to the orders under the existing contract, BSNL may increase the amounts purchased under the contract up to an additional 50% of the existing contract level to allow for business expansion. Nortel expects that there is the potential for further product losses, which will be determined by the product mix and magnitude of additional orders.

18.

Subsequent events

EDC Support Facility

		On April 14, 2005, Nortel and NNL announced that the filing of Nortel’s and NNL’s Quarterly Reports on Form 10-Q for the first quarter of 2005 (the “2005 First Quarter Reports”) were expected to be delayed and that, if necessary, NNL intended to seek a new waiver from EDC in connection with such delay.
		On April 29, 2005, NNL obtained a new waiver from EDC (the “April Waiver”) of certain defaults and related breaches by NNL under the EDC Support Facility. The April Waiver remains in effect until the earliest of certain events including the date on which Nortel and NNL have filed the 2004 Annual Reports and the 2005 First Quarter Reports, or May 31, 2005.
		On May 31, 2005, NNL obtained a permanent waiver from EDC (the “Permanent Waiver”) of certain defaults and the Related Breaches by NNL under the EDC Support Facility. With the filing of the 2005 First Quarter Reports and the Permanent Waiver, NNL will be in compliance with its obligations under the EDC Support Facility.
		As of May 16, 2005, there was approximately $228 of outstanding support utilized under the EDC Support Facility, approximately $160 of which was outstanding under the small bond sub-facility.

Debt securities

As a result of the delay in filing the Reports and the 2005 First Quarter Reports, Nortel and NNL were not in compliance with their obligations to deliver their respective SEC filings to relevant parties under Nortel’s and NNL’s public debt indentures. With the filing of the 2005 First Quarter Reports with the SEC and the delivery of the 2005 First Quarter Reports to the trustees under Nortel’s and NNL’s public debt indentures, Nortel and NNL will be in compliance with their delivery obligations under the public debt indentures.

Stock exchanges

As a result of the delay in filing the Reports and the 2005 First Quarter Reports, Nortel was in breach of the continued listing requirements of the New York Stock Exchange (“NYSE”) and Toronto Stock Exchange (“TSX”). With the filing and delivery of the 2005 First Quarter Reports, Nortel will be in compliance with the continued listing requirements of the NYSE and TSX.

Prepaid forward purchase contracts

As a result of the delayed filing of the Reports and the 2005 First Quarter Reports, Nortel is unable to permit holders of Nortel’s prepaid forward purchase contracts to exercise certain “early settlement” rights and receive Nortel Networks Corporation common shares in advance of the otherwise applicable August 15, 2005 settlement date. These rights would again become exercisable upon the effectiveness of a registration statement (or a post-effective amendment to the shelf registration statement) filed with the SEC (with respect to the Nortel Networks Corporation common shares to be delivered) that contains a related current prospectus. Under the terms of the Purchase Contract and Unit Agreement which governs the purchase contracts, Nortel has agreed to use commercially reasonable efforts to have, in effect, a registration statement covering the Nortel Networks Corporation common shares to be delivered and to provide a prospectus in connection therewith. Nortel does not believe that it will be able, through the use of commercially reasonable efforts, to have an effective long-form registration statement relating to the exercise of certain “early settlement” rights by holders of Nortel’s prepaid forward purchase contracts on file with the SEC in advance of August 15, 2005. Accordingly, holders continue not to be able to exercise these rights in advance of the otherwise applicable settlement date of August 15, 2005.

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Other

		On April 26, 2005, Nortel announced that NNI, a wholly owned subsidiary of NNL, had entered into an agreement with PEC Solutions, Inc. (“PEC”) providing for the acquisition of all of the outstanding shares of PEC for $15.50 per share in cash, or approximately $448 (net of cash acquired), plus transaction costs and expenses. The acquisition is subject to certain conditions, including the successful completion of a tender offer and regulatory approvals. Nortel currently expects to complete the acquisition during the second quarter of 2005.
		On May 20, 2005, Nortel announced the signing of an agreement with International Business Machines (“IBM”), designed to support customized products across a range of market segments. Nortel will establish a Nortel-IBM Joint Development Center to collaborate on the design and development of new products and services.

19.

Reconciliation from U.S. GAAP to Canadian GAAP

		New Canadian regulations allow issuers that are required to file reports with the SEC, upon meeting certain conditions, to satisfy their Canadian continuous disclosure obligations by using financial statements prepared in accordance with U.S. GAAP. Accordingly, for fiscal 2005 and 2004, Nortel is including in the notes to its consolidated financial statements a reconciliation highlighting the material differences between its financial statements prepared in accordance with U.S. GAAP as compared to financial statements prepared in accordance with accounting principles generally accepted in Canada (“Canadian GAAP”). Subsequent to 2005, no further reconciliation will be required under current Canadian regulations. Prior to 2004, Nortel prepared financial statements (with accompanying notes) and Management’s Discussion and Analysis — Canadian Supplement in accordance with Canadian GAAP and Canadian securities regulations, all of which were presented as a separate report and filed with the relevant Canadian securities regulators in compliance with its Canadian continuous disclosure obligations.
		The consolidated financial statements of Nortel have been prepared in accordance with U.S. GAAP and the accounting rules and regulations of the SEC which differ in certain material respects from those principles and practices that Nortel would have followed had its consolidated financial statements been prepared in accordance with Canadian GAAP. The following is a reconciliation of the net earnings (loss) between U.S. GAAP and Canadian GAAP for the three months ended March 31, 2005 and 2004, and accumulated deficit as of March 31, 2005 and 2004 and earnings per share data under Canadian GAAP for the three months ended March 31, 2005 and 2004:

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The following details the material differences between U.S. GAAP and Canadian GAAP for balance sheet information as of March 31, 2005 and December 31, 2004: