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

FORM 10-K

Commission file number 001-07260

Nortel Networks Corporation
(Exact name of registrant as specified in its charter)

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

Securities registered pursuant to Section 12(b) of the Act:

The common shares are also listed on the Toronto Stock Exchange in Canada

Securities registered pursuant to Section 12(g) of the Act: None

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 if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. o

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

At February 28, 2003, 3,851,077,984 common shares of Nortel Networks Corporation were issued and outstanding. Non-affiliates of the registrant held 3,848,471,933 common shares having an aggregate market value of $8,274,214,655.95 based upon the last sale price on the New York Stock Exchange on February 28, 2003, of $2.150 per share; for purposes of this calculation, shares held by directors and executive officers have been excluded.

Listed hereunder is the document to be incorporated by reference and the Parts of the Form 10-K into which the document will be incorporated:

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

NORTEL NETWORKS, NORTEL NETWORKS LOGO, NT, THE GLOBEMARK, BAYSTACK, CALLPILOT, CONTIVITY, DMS, EPICON, MERIDIAN, NORSTAR, OPTERA, PASSPORT, PERIPHONICS, PRESIDE, SHASTA, SUCCESSION and UNIVERSAL EDGE are trademarks of Nortel Networks.

ALTEON is a trademark of Alteon WebSystems.

CDMA2000 is a trademark of the Telecommunications Industry Association

CDMAONE - design mark is a trademark of the CDMA Development Group, Inc.

CLARIFY is a trademark of Amdocs Software Systems Limited.

JUNGLEMUX is a trademark of GE Industrial Systems Technology Management Inc.

MICROSOFT and WINDOWS XP are trademarks of Microsoft Corporation.

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

S&P 100, S&P 500 and STANDARD AND POOR’S are trademarks of The McGraw-Hill Companies, Inc.

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PART I

ITEM 1.     Business

Overview

     Nortel Networks Corporation is an industry leader and innovator focused on transforming how the world communicates and exchanges information. We supply products and services that support the Internet and other public and private data, voice and multimedia communications networks using wireline and wireless technologies, which we refer to as “networking solutions”. Our networking solutions generally bring together diverse networking products from our various product families, and related services, to create either a customized or “off the shelf” solution for our customers. Our business consists of the design, development, manufacture, assembly, marketing, sale, licensing, installation, servicing and support of these networking solutions. A substantial portion of Nortel Networks has a technology focus and is dedicated to research and development. This focus forms a core strength and a factor differentiating us from many of our competitors. We envision an information society where people will be able to connect and interact with information and with each other instantly, simply and reliably, seamlessly accessing data, voice and multimedia communications services and sharing experiences anywhere, anytime.

     Our networking solutions include network equipment, software and other technologies that enable local and long-distance communications companies, wireless service providers, cable multiple system operators and other communications service providers to provide their customers with services to communicate locally, regionally or globally through the use of data, voice and multimedia communications.

     Also, our networking solutions provide enterprises such as large and small businesses, governments, educational institutions and other organizations, with the ability to communicate locally or globally within their organization and with other organizations and individuals through the use of data, voice and multimedia communications. We are focused on providing high-performance networking solutions that transform the way people and companies communicate and conduct business.

     During the third quarter of 2002, we changed the way we managed our business to streamline and focus more directly on our customers in our four core business areas. We now conduct business in the following four reportable segments: Wireless Networks; Enterprise Networks; Wireline Networks; and Optical Networks (formerly named Optical Long-Haul Networks). During the second quarter of 2002, we shifted the accountability for the metro optical portion of Metro and Enterprise Networks (now split into Enterprise Networks and Wireline Networks) into Optical Networks. We refer you to the descriptions of Wireless Networks, Enterprise Networks, Wireline Networks and Optical Networks below. All financial information has been restated to reflect these re-organizations. For financial information by reporting segment and product category, see “Segmented information” in note 5 of the accompanying consolidated financial statements and “Results of operations — continuing operations — Segment revenues” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

     The Company’s principal executive offices are located at 8200 Dixie Road, Suite 100, Brampton, Ontario, Canada, L6T 5P6; telephone number (905) 863-0000. The Company was incorporated in Canada on March 7, 2000 under the name New Nortel Inc. On May 1, 2000, the Company participated in a Canadian court-approved plan of arrangement with Nortel Networks Limited (previously known as Nortel Networks Corporation) and BCE Inc., the largest shareholder of Nortel Networks Limited prior to the plan of arrangement. In connection with the plan of arrangement on May 1, 2000:

	•		the Company changed its name to Nortel Networks Corporation;
	•		the holders of the outstanding publicly traded common shares of Nortel Networks Limited became common shareholders of the Company;
	•		common shares of the Company were distributed to the common shareholders of BCE; and
	•		Nortel Networks Limited became the principal operating subsidiary of the Company.

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     The Company also assumed Nortel Networks Limited’s financial reporting history as of May 1, 2000, the date of the plan of arrangement, for financial reporting purposes. As a result, management deems Nortel Networks Limited’s consolidated business activities prior to May 1, 2000 to represent the Company’s consolidated business activities as if the Company and Nortel Networks Limited had historically been the same entity. References to “the Company” mean Nortel Networks Corporation without its subsidiaries. References to “we,” “our,” “us,” or “Nortel Networks” mean the Company and its subsidiaries.

     We make our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to those reports available free of charge under “Investor Relations” on our website at www.nortelnetworks.com as soon as reasonably practicable after we electronically file this material with, or furnish this material to, the United States Securities and Exchange Commission. Information contained on our website is not incorporated by reference into our annual report on Form 10-K.

Developments in 2002

     In 2002, the telecommunications industry continued to experience significant adjustment which began in 2001. Industry demand for networking equipment continued to decline in response to the ongoing industry adjustment, economic downturn and to the related tightening in the global capital markets. As a result of the continued industry adjustment, the business marketplace has changed. Excess network capacity still exists as a result of the pace of new network construction and strong economic growth in 1999 and 2000 and due to the financial difficulties of a number of communications service providers around the world. In 2002, the industry also experienced continuing consolidation.

     Our customers continued to focus in 2002 on conserving capital, decreasing their debt levels, reducing costs and/or increasing the capacity utilization rates and efficiency of existing networks. Customers are no longer building new networks in anticipation of market demand but are waiting until actual end user demand warrants such increased network capacity. Enterprises and service providers are focused on conservative capital spending that can reduce their costs, provide new revenue growth and maximize their return on invested capital. As a result, capital spending by enterprises and service providers around the world continued to decline in 2002.

     In response to the ongoing industry adjustment, we engaged in a number of activities in 2002 to further streamline our operations and activities around our four core businesses and to strengthen our financial position. Some of our activities in 2002 included:

	•		realignment of Optical Networks, including the sale of certain optical components assets;
	•		restructuring, including additional workforce reductions and asset writedowns;
	•		equity offerings during the second quarter; and
	•		expiration and termination of certain of our credit facilities and amendments to our security agreements.

     As a result of these initiatives, we have made substantial progress in reducing our costs and creating a business model that we believe is better aligned to the current state of our industry. For information on these and other developments in 2002, see “Special charges” in note 6, “Divestitures, closures and acquisitions” in note 9, “Long-term debt and credit facilities” in note 10 and “Capital stock” in note 14 of the accompanying consolidated financial statements and “Developments in 2002” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Networking solutions

     Our networking solutions include network equipment, software and other technologies that enable communications through the use of data, voice and multimedia networking. In our industry, networking refers to:

	•		the connecting of two or more communications devices, such as telephones for voice communications and personal computers for data communications, across short or long distances to create a “network”;
	•		the connecting of two or more networks; or
	•		the connecting of equipment used in a network.

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     A telecommunications network generally consists of network access equipment, network transport equipment and core networking equipment.

Network access

     Network access refers to the portion of a network that runs from an end user to the network access equipment that resides in locations between the end user’s site and the interior or “core” areas of a network. For our network access solutions, we refer you to each of our segment descriptions below.

Network transport

     Network transport refers to the portion of a network that runs from network access equipment to core networking equipment, or from core networking equipment in one location to core networking equipment in another location. Network transport may be over wireline cabling (fiber optic, copper wire or coaxial), or over wireless radio signals transmitted through the air between locations using antennas. The most common method for long-distance network transport is optical networking, which uses light waves to transmit communications signals through fiber optic cables. Network transport by wireless radio signals is also known as digital radio transport, which we do not offer as part of our products and services. For our optical transport products, we refer you to our “Optical Networks” description below.

Core networking

     Core networking refers to the apparatus and workings of the interior areas of a network. Core networking equipment directs, routes or “switches” the data, voice and multimedia communications signals from one part of the network to another. Core networking uses either packet-based networking or circuit networking. Packet-based networking involves the partitioning of a data, voice or multimedia communications signal into pieces, or “packets”, that are directed or routed through the network independently and then re-assembled at the destination. This enables large numbers of communications signals to be directed or routed simultaneously and more efficiently than in circuit networking, which requires a separate network circuit to be maintained for each communications signal for the duration of the transmission. For our core networking solutions, we refer you to each of our segment descriptions below.

Wireless Networks

Products

     Wireless networking, also known as mobility networking, refers to communications networks that enable end users to be mobile while they send and receive voice and data communications using wireless devices, such as cellular telephones and personal digital assistants. These networks use specialized network access equipment and specialized core networking equipment that enable an end user to be connected and identified when not in a fixed location. The technology for wireless communications networks has evolved and continues to evolve, through various technology “generations”.

	•		First generation (1G) wireless technology refers to analog wireless communications networks based on circuit switching technology that are limited to voice communications.
	•		Second generation (2G) wireless technology refers to digital wireless communications networks based on circuit switching technology with modest data transmission capabilities.
	•		Third generation (3G) wireless technology refers to digital wireless communications networks based on packet networking technology with voice, high-speed data and multimedia transmission capabilities.

     Our existing wireless solutions span second and third generation wireless technologies and most major global digital standards for mobile networks. The majority of wireless communications networks existing today are based on 2G wireless technologies. However, 3G networks have been launched in several regions. There are several main international standards for wireless communications networks.

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	•		Time Division Multiple Access (TDMA) is a 2G wireless standard supported mainly in the United States, Canada and the Caribbean and Latin America region, or CALA, that uses timeslots within a radio frequency channel to separate users’ conversations.
	•		Code Division Multiple Access (CDMA) is a 2G wireless standard, also known as cdmaOne, supported in each geographic region. CDMA uses codes, much like encryption, to distinguish one call from another, with all calls in a given cell transmitted over the entire range of radio frequencies assigned to the network operator within the cell. CDMA networks based are evolving to 3G according to the CDMA 36 1xRTT (single channel (1x) Radio Transmission Technology) standard, also known as cdma2000, for voice and high-speed data mobility. CDMA 3G 1xEV-DO (EVolution Data Only) and CDMA 3G 1xEV-DV (EVolution Data and Voice) are extensions of CDMA 3G standards for high speed wireless networks for data, voice and multimedia communications.
	•		Global System for Mobile communications (GSM) is a 2G wireless standard supported all over the world that, like TDMA, uses time slots within a specified radio frequency channel to distinguish one call from another. GSM networks are evolving to carry data, as well as voice, with the introduction of General Packet Radio Standard (GPRS). GPRS is viewed as a “2.5G” technology that provides faster and therefore increased data transmission capabilities. Enhanced Data Rates for Global Evolution (EDGE) is a further evolution of GSM systems to support higher data speeds. In addition to higher data speeds, EDGE provides increased voice capacity for existing GSM operators.
	•		Universal Mobile Telecommunications System (UMTS) is an emerging standard for 3G networks based on Wideband CDMA (WCDMA) technology. UMTS combines WCDMA-based radio access with packet switching technology to yield high capacity, high speed wireless networks for data, voice and multimedia communications.

     We offer a broad portfolio of solutions for wireless communications networks. Our wireless networking products support the TDMA, CDMA/CDMA 3G, GSM/GPRS/EDGE and UMTS standards. We also offer a range of related professional services to our customers, including: network design and engineering services; installation services; network optimization services; network operation services; and technical operations and maintenance services.

Network access

     Radio network access equipment uses radio waves to provide wireless access to the subscriber’s hand held device, enabling the wireless subscriber to connect to the network to send and receive data, voice and multimedia communications. The key network elements in radio access are base station transceivers and base station controllers. As a mobile subscriber moves away from the area covered by a base station transceiver, also known as a cell site, the subscriber will lose the call unless an adjacent cell site provides the coverage. This requires that an active wireless call be transferred from one cell to another cell without breaking or disconnecting the call in progress, also known as a “hand-off”. Base station transceivers and base station controllers work together with core networking equipment to perform a call hand-off. We offer our customers a wide range of base station transceivers and base station controllers for TDMA, CDMA/CDMA 3G, GSM/GPRS/EDGE and UMTS standards. The base stations are available in the common frequency spectrum bands that are assigned to mobile communications and support a wide variety of network requirements, including metropolitan and dense urban networks. These are generally available in micro, macro and mini base station transceiver packages and are available in both outdoor and indoor versions of base station transceivers. We do not manufacture or sell cellular phones.

	•		Our CDMA base station transceivers support CDMA 2G (IS-95) and CDMA 3G transmission standards. Many of our customers have already deployed CDMA 3G base station transceivers that support 1xRTT and are upgradeable to support emerging CDMA 3G 1xEV-DO and CDMA 3G 1xEV-DV standards in the future.
	•		Our GSM base station products support wireless service providers with licensed radio spectrum and can be upgraded to support GPRS.
	•		Our UMTS Access Network radio network access equipment is now available for commercial deployment.

Core networking

     Core networking equipment directs, routes or “switches” communications signals within a service provider’s wireless communications network. The primary functions of core networking equipment in wireless communications networks are: identifying and authenticating the called party; locating the called party; directing the call through the system;

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and generating call detail records for billing purposes. The key network elements in the core part of a wireless communications network are mobile switching centers and home location registers.

	•		Mobile switching centers direct or “switch” data, voice and multimedia communications signals from one network circuit to another. Mobile switching centers also support advanced voice services like 3-way calling, calling party number/name delivery, call holding and call redirection. Mobile switching centers work in conjunction with adjunct systems like voice mail systems, short message service centers and multimedia messaging systems to provide voice, text and multimedia messaging services.
	•		A home location register is a database that contains permanent subscriber data, such as provisioning and service information and dynamic information, such as the wireless handset’s current location.

     We offer mobile switching centers and home location registers that support TDMA, CDMA/CDMA 3G, GSM/GPRS/EDGE and UMTS core networks. Our GPRS core network portfolio includes Serving GPRS Support Node and Gateway GPRS Support Node. Our Serving GPRS Support Node, which connects the GPRS “backbone” network to the base station transceiver and the home location register, registers and tracks mobile users and delivers data communications to cellular phones and other mobile devices in a given service area. Our GPRS Gateway Support Node routes data communications and connects the GPRS backbone network to external data networks. Our UMTS 3G core networking equipment, including our UMTS Serving Support Node and our UMTS Gateway Support Node, are commercially available. Our 3G product portfolio reuses the same platforms used in 2G and 2.5G products, providing significant investment protection for our customers.

Product development

     Our wireless networking products in development include the next evolution of our CDMA 3G products, our GSM/GPRS/EDGE products and our UMTS products.

	•		Our CDMA 3G 1xRTT products are generally available and have been deployed in several commercial networks in all our geographic regions. Our CDMA 3G 1xEV-DO product is undergoing commercial trials in the United States and Brazil. We are currently working with the various standards bodies to finalize the specifications for CDMA 3G 1xEV-DV.
	•		There are several GSM/GPRS/EDGE products that are being developed to allow GSM operators to offer higher data rates on existing GSM spectrum allocations. We successfully completed customer trials of Adaptive MultiRate (AMR) base station transceivers in the second half of 2002. AMR provides higher spectral efficiency to support more customers on the same network.
	•		The enhanced version of our GSM base station controller, the GSM BSC e3, is currently in development. We have been shipping EDGE hardware ready base station transceivers since the second quarter of 2002, and we are currently developing EDGE software.
	•		Our UMTS radio network access and core networking products are currently being tested for commercial launch by several operators in the Europe, Middle East and African region, or EMEA.

Markets

     The original wireless communications networks were built using 1G analog technology. In the early 1990s, advanced 2G digital technology based systems, including TDMA, CDMA and GSM, were introduced. Over the next couple of years, we expect most of the remaining analog wireless networks to migrate to digital technologies.

	•		Wireless service providers operating TDMA networks, a mature technology, are expected to migrate to either GSM/GPRS/EDGE or CDMA/CDMA 3G systems based on their business strategies.
	•		Many CDMA operators have already upgraded their network to support CDMA 3G technology that provides higher data speeds and increased voice capacity. These networks are expected to evolve to CDMA 3G 1xEV-DO and CDMA 3G 1xEV-DV standards to further increase data speeds and voice capacity.

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	•		Since the beginning of 2000, many wireless service providers have been upgrading their GSM networks to GPRS. The upgrade to EDGE is expected to occur over the next several years, and is viewed by many operators as 3G. GSM will continue to be an important standard for the United States, Canada and developing countries.
	•		Certain operators in EMEA and the Asia Pacific region have either launched or announced their intention to launch 3G networks based on UMTS technology.

     There are two key aspects to the migration from 2G wireless communications technologies to 2.5G and 3G wireless communications technologies. The first is that all current 3G technologies, including CDMA 3G and UMTS are based on spread spectrum technology. The second is that the migration from 2G to 2.5G and 3G technologies is largely based on a transition from circuit switching technologies in 2G core networks to packet-based networking technologies in 3G core networks. We believe that our extensive experience in deploying CDMA wireless communications networks, combined with our expertise in packet-based networking for wireline networks, will be a competitive strength during the migration from 2G wireless communications networks to 2.5G and 3G wireless communications networks. However, the timing of this migration has become increasingly difficult to predict as a result of the complexities and potential for delays in implementation of 3G network deployments.

     We anticipate that demand for wireless networking equipment will be driven primarily by the growth of 2.5G and 3G wireless networking systems. Several commercial CDMA 3G networks have been launched in the United States, Canada, CALA and the Asia Pacific region. GPRS networks have already been launched in EMEA, the Asia Pacific region, the United States and Canada. In addition, several existing operators are planning to upgrade their networks to EDGE to support higher data rates. While the first launches did take place in EMEA and the Asia Pacific region, the timing of UMTS network deployments remains uncertain, generally due to delays in UMTS hand set availability as a result of technology issues, the high license fees and continued financial difficulty of certain UMTS wireless service providers.

     In the United States and Canada, usage rates of wireless communications services continue to increase, and we anticipate that capital spending decisions by wireless service providers will be driven by capacity requirements, new wireless subscribers, increased use of wireless devices for Internet access and technology migration from 2G wireless technologies to 2.5G and 3G wireless technologies. We also anticipate that the migration from 2G to 2.5G and 3G wireless will be driven by CDMA 3G 1xRTT deployment for CDMA-based networks, and by GPRS and UMTS deployment for GSM and TDMA-based networks. However, the timing of this migration is uncertain given the ongoing industry adjustment.

     Within EMEA, wireless subscriber growth has slowed dramatically over the last two years in many Western European countries, largely due to very high wireless subscriber penetration levels. However, other parts of EMEA continue to grow their subscriber base due to the lower market penetration for wireless services. Investment decisions by wireless service providers in Western Europe are being driven by anticipated growth in wireless data communications services. As a result, infrastructure spending in Western Europe is currently primarily driven by the migration from GSM to GPRS and UMTS technologies, and the associated migration from circuit switching technologies to packet-based networking technologies. However, many wireless service providers in Europe have delayed new 3G investments as a result of financing constraints as well as the significant debt incurred to obtain government licenses for 3G wireless networks.

     In the Asia Pacific region, we anticipate that capital spending by wireless service providers will be driven by the migration to 3G technologies in Japan and Korea, and by continued growth in wireless subscribers in the People’s Republic of China, or China. Growth in China may be further driven by anticipated new national licenses for 3G, and a CDMA 3G network build-out by China Unicom. Many countries in South and South East Asia have very low wireless subscriber penetration levels, and are expected to experience increased wireless subscriber growth over the next five years. India is also anticipated to be a major wireless infrastructure market in the next five years.

     In CALA, our customers’ wireless subscriber base has continued to grow in 2002, largely due to the popularity and increased affordability of wireless communications services. In Brazil, capital spending by service providers has begun to shift from wireline communications networks to wireless communications networks.

     For a discussion of important trends in Wireless Networks, see “Results of operations — continuing operations — Wireless Networks” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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Customers

     Our Wireless Networks customers are wireless service providers, and their customers are the subscribers for wireless communications services. The top 20 global wireless service providers collectively account for a majority of all wireless subscribers around the world. We are currently focused on increasing our market presence among the top global wireless service providers. We expect to see the continued consolidation of wireless service providers, particularly in light of the large UMTS 3G license fees paid by wireless service providers in EMEA, and the large capital investments they must make to build their 3G wireless networks. None of our Wireless Networks customers represented more than 10 percent of Nortel Networks consolidated revenues in 2002.

Competition

     Our major competitors in the global wireless infrastructure business have traditionally included Telefonaktiebolaget LM Ericsson, Lucent Technologies Inc., Motorola, Inc., Siemens Aktiengesellschaft and Nokia Corporation. Nokia and Siemens compete in the sale of GSM and UMTS equipment, whereas Lucent competes in the sale of CDMA and TDMA equipment. Motorola is a competitor in the sale of GSM, UMTS and CDMA radio network access equipment. Ericsson competes in the sale of equipment for all of the major wireless communications technologies. More recently, Samsung Electronics Co., Ltd. has emerged as a competitor in the sale of CDMA systems, and Huawei Technologies Co., Ltd. has emerged as a competitor for GSM in China and many other developing countries. The primary global factors of competition for our Wireless Networks products include:

	•		technology leadership, product features and availability;
	•		product quality and reliability;
	•		conformity to existing and emerging regulatory and industry standards;
	•		warranty and customer support;
	•		price and cost of ownership;
	•		provision of customer financing;
	•		interoperability with other networking products;
	•		network management capabilities;
	•		traditional supplier relationships, particularly in EMEA and the Asia Pacific region; and
	•		regulatory certification.

     We intend to continue to compete with our traditional competitors as the global market for wireless networking equipment migrates to 3G technologies. We also expect newer competitors, such as NEC Corporation and Matsushita Electric Industrial Co., Ltd. (also known as Panasonic), to emerge.

Enterprise Networks

Products

     Our Enterprise Networks portfolio of products provide wireline voice and multimedia communications for our customers. We also provide our customers with related professional services including: strategic planning and network design services; operations planning and consulting services; technology and process outsourcing services; network applications and network content services; and installation and ongoing technical support.

Circuit and packet voice solutions

     Our voice portfolio includes a broad range of circuit and packet voice communications solutions. These include circuit to packet convergence systems, combined voice and data interaction solutions, as well as next generation and legacy voice systems.

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	•		Our enterprise Succession solutions are combined voice and data communications systems for service providers and large enterprises. These solutions are designed to give our customer the ability to support data and large enterprises networking without replacing their existing voice networks, or the ability to add voice services to existing data networks. Our enterprise Succession solutions can be used by customers building new networks, and customers who want to transform their existing voice communications network into a more cost effective packet-based network supporting data, voice and multimedia communications.
	•		Our Business Communications Manager is a combined voice and data communications system for branch offices and small to medium-sized businesses that uses both digital and Internet Protocol (IP) technologies. This solution allows migration from an enterprise’s separate voice and data communications infrastructures to a combined next generation Internet-based system. Available applications include voice messaging, cordless phones, contact center software and data communications routing.
	•		Our Meridian digital telephone switching systems (Meridian) are designed for small, medium and large commercial enterprises and government agencies. These circuit network telephone systems provide voice communications features, such as voice messaging, call waiting and call forwarding, as well as advanced voice services, multimedia applications and other networking capabilities. Our customers can also configure their Meridian to send voice communications over the Internet with our Internet Telephony Gateway products and our i2004/i2050 Internet telephones.
	•		Our remote office portfolio contains a combination of products that allow remote users, whether individuals at home or groups of employees in small offices, to access the full complement of Meridian features.
	•		Our Norstar digital telephone switching systems are designed for small to medium-sized businesses and branch offices of large organizations. These circuit networking telephone systems can be configured with a suite of applications, such as voice messaging, cordless phones, contact center software and interactive voice response systems.
	•		Our customer contact and voice portal solutions provide the means for enterprises to do business with their customers consistently regardless of where they are located, the time or whether they interact over the telephone or Internet. Our solutions include our:

	—		Periphonics interactive voice response systems that automate functions often conducted by a company’s telephone agents. Our interactive voice response systems answer the telephone, greet callers, offer menu options and provide information to the caller in a consistent, accurate manner. These systems use advanced speech recognition systems to allow a caller to interact with the system by orally responding to questions or prompts presented to the caller by the system.
	—		Symposium call center portfolio of products that provide call center solutions for small, medium and large organizations. Our Symposium call center solutions can provide either a standard circuit–switched voice system or an Internet-based call center solution.
	—		CallPilot, which is a unified messaging tool that utilizes speech recognition and Transmission Control Protocol/IP digital networking to give complete access and total control of facsimile, e-mail and voice messages. Using simple voice commands like “play” or “print”, a user can remotely manage their multimedia communications over the telephone. The user can print facsimiles, store or delete voice messages and more by simply speaking.

Data networking and security solutions

     We offer a broad range of data networking (packet switching and routing) and security solutions for our customers. Our packet switching and routing systems include data switching systems, aggregation products, virtual private network gateways and routers.

	•		Our Alteon Web products provide data switching designed to allow service providers and enterprises to provide Internet data security, to manage and prioritize the Internet content that is provided to end users, and to balance the amount of communications traffic on multiple Internet servers.
	•		Our Baystack and Business Policy Switch 2000 portfolio is a series of high performance packet switches for our enterprise customers’ small to large local area networks that use the Ethernet, a standard computer networking protocol for local area networks. These switching systems are designed to allow the prioritization of

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			communications traffic to ensure network integrity for certain applications, such as systems for voice communications over the Internet.
	•		Our Passport family of multi-service switching products offers high-speed, high-capacity data switching to support a wide range of data communications technologies, including multi-protocol label switching, asynchronous transfer mode, IP and frame relay services. These products are also key components of our Succession solution voice over packet applications and IP virtual private network services. Our Passport Ethernet Routing Switch delivers IP routing and switching.
	•		Our Bay router portfolio is a family of routers that work with a variety of data networking protocols to offer expandable, contractible and cost-effective connections for use in our enterprise customers’ local area networks, campus networks and wide area networks. These solutions use the IP standard to route data communications traffic from one corporate site to another within an enterprise’s network.
	•		The Contivity Secure IP Services Gateways (Contivity) are a family of products delivering security and IP services in a single integrated platform. IP services including IP routing, virtual private networks, firewall applications, policy management and Quality of Service services, which normally would require several different devices, are provided by a single Contivity device. Designed for enterprise networks, Contivity leverages the cost advantages of the Internet while providing secure communications across the public IP infrastructure.

Product development

     We are currently focused on developing products that support the continuing evolution of voice and data communications systems toward converged or combined voice and data networks including:

	•		The development of a communication server for enterprise multimedia exchange, a Succession product that will provide the capability to deliver multimedia applications and enhanced networking capabilities.
	•		Additions to our applications in our Succession products to allow integration of voice over IP with voice extensible markup language and Microsoft Windows XP and the development of new integrated voice recognition speech products offering expanded scalability and functionality.
	•		New developments in data networking with our BayStack Layer 2 switches that will deliver resiliency and Quality of Service capabilities and Power over Ethernet to provide network connectivity and power to devices over the same line, along with the development of the next generation Alteon Web platform which will feature higher performance, scalability (i.e. the ability to grow a service or capability with incremental cost) and integrated applications.

	•		Enhancements to our security portfolio including the new Alteon SSL and Web Switching products and a new high-end Contivity product, which is in development scheduled for launch in 2003.
	•		Enhanced capabilities in our Passport 8600 version 3.3 software, delivering 10 Gigabit Ethernet on either local area network or wide area network platforms that will feature improved scaling, multicast and resilience for better overall performance.

Markets

     We offer Enterprise Networks products to enterprises around the world. With the growth of voice and data communications over the public telephone network, the public Internet and private voice and data communications networks, there is an increasing opportunity to converge disparate networks towards a single, high performance network that can support most types of communications traffic and applications.

     We believe that in order to meet the growing demand for increased capacity at lower per-minute rates, enterprises will transition their digital circuit-based voice communications to more cost effective packet-based technologies. As a result, we anticipate growth in demand for packet-based networking equipment that supports the convergence of data, voice and multimedia communications over a single communications network and that provides greater network capacity, reliability,

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speed, quality and performance. However, the timing of this progression is unclear given the continuing industry adjustment and reduction in our enterprise customers’ spending.

     Based on the uncertainty in today’s political environment, network security and resiliency has become a significant focus for enterprise customers worldwide. Globally, enterprise customers continue to invest in equipment for their communications networks, primarily for network security and resiliency, for voice over IP and for virtual private networks. In the United States and Canada, enterprise customers are investing in voice over IP as they transition from legacy voice products to our enterprise Succession products. Our enterprise Succession products enable this conversion from voice communication networks to packet-based networks supporting data, voice and multimedia communications. In EMEA, our customers are beginning to invest in new technology such as voice over IP. In the Asia Pacific region, Enterprise Networks customers are continuing to invest in networking equipment to improve the connections among their regional sites and branch offices. In CALA, enterprises are continuing to drive demand for networking equipment that supports the growing use of the Internet in the region.

     For a discussion of important trends in Enterprise Networks, see “Results of operations — continuing operations — Enterprise Networks” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Customers

     We offer our products and services to 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 institutions and utility organizations. Key industry sectors for our business customers include the telecommunications, high-technology manufacturing and financial services sectors. We also serve customers in the healthcare, retail, hospitality, services, transportation, governments and other industry sectors. We are currently focused on increasing our market presence with enterprise customers. In particular, we intend to focus on leading enterprise customers with high performance networking needs. Certain of our service provider customers also act as a distribution channel for our Enterprise Networks sales and include incumbent local telephone companies, competitive local telephone companies and system integrators. None of our Enterprise Networks customers represent more than 10 percent of Nortel Networks consolidated revenues in 2002.

Competition

     Our principal competitors in the sale of our Enterprise Networks solutions to enterprises are Cisco Systems, Inc., Avaya Inc., Alcatel S.A. and Siemens. Avaya is our largest competitor in the sale of voice equipment while Cisco is our largest competitor in the sale of data networking equipment to enterprises. We also compete with smaller companies that address specific niches, such as Foundry Networks, Inc., Extreme Networks, Inc., Enteresys Networks, Inc., 3Com Corporation in Internet-based voice communications solutions and Genesys Telecommunications Laboratories, Inc. in call centers. We expect competition to remain intense enterprises look for ways to maximize the effectiveness of their existing networks while reducing ongoing capital expenditures and operating costs. The principal global factors of competition in the sale of our Enterprise Networks products include:

	•		technology leadership product features and availability;
	•		product quality and reliability;
	•		conformity to existing and emerging regulatory and industry standards;
	•		sales distribution and channel marketing strategy;
	•		warranty and customer support;
	•		price and cost of ownership;
	•		interoperability with other networking products;
	•		installed base of product; and
	•		alternative solutions offered to enterprises by service providers.

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     The principal competitive factors for the sale of our products to enterprises also include the leveraging of existing customer-supplier relationships and the availability of distribution channels.

Wireline Networks

Products

     Our wireline portfolio addresses the demand by our service provider customers for cost efficient data, voice and multimedia communication solutions. Our converged wireline solutions, including related professional services, simplify network architectures bringing voice, video, data and emerging broadband applications for revenue generating services together on one easy-to-manage packet network.

Circuit and packet voice solutions

     We are a leader in the development and deployment of highly scalable circuit switched and secure voice over packet solutions such as voice over IP for wireline and wireless service providers around the world. Our voice over packet solutions offer service providers and cable multiple system operators sustainable operating and capital cost reduction, new revenue opportunities, as well as high levels of reliability and network resiliency.

	•		Our wireline Succession solutions are voice over packet network solutions for service providers. Succession provides the complete range of voice over packet solutions, including local, toll, long-distance, operator services and international gateway capabilities and enables voice applications to run on the new multi-services packet network. Succession solutions leverage more efficient packet-based, as opposed to circuit-based technologies, which drive reduced capital and operational costs for service providers and provide a platform for the delivery of new, revenue-generating services, such as Centrex IP and voice over IP virtual private networks.
	•		Our Wireline Interactive Multimedia Server (IMS) is a Session Initiation Protocol (SIP) based application server. SIP is a standard protocol for initiating an interactive user session that involves multimedia elements such as video, voice, chat, gaming and virtual reality. IMS works as a stand-alone solution or in conjunction with our Digital Multiplex System (DMS) or our Succession solutions to provide advanced packet voice and multimedia capabilities to service providers. Using IMS, our customers can deploy new, enhanced multimedia services, including video, collaboration and personal agent services. Personal agent services allow a user to customize their communications by selecting the medium over which they wish to receive a particular message such as wireline or wireless telephony, e-mail and instant messaging by setting screening criteria such as time of day and day of week, month or year.
	•		Our DMS is a family of digital, circuit-based telephone switches that provide local, toll, long-distance and international gateway capabilities for service providers and includes Directory and Operator Services for our customers in the United States and Canada. Our DMS systems enable service providers to connect people making local and long-distance telephone calls. Our DMS systems also provide for a broad range of service capabilities, including revenue-generating features such as caller identification and call waiting that are offered to the service providers’ residential and business customers. Our DMS family of products can evolve to Succession solutions.

     These products work alone or in combination with each other to provide traditional voice services, advanced packet voice services and multimedia services to service providers around the world.

Data networking and security solutions

     We offer a wide range of data networking (packet switching and routing) solutions to our service provider customers. The Passport family of multi-service wide area network switches and the Shasta Broadband Service Node enable our service provider customers to offer connectivity solutions and high value services to both enterprises and residential customers. The connectivity solutions include access services such as: frame relay; Asynchronous Transfer Mode (ATM); digital subscriber line; and Internet access. High-value services such as IP virtual private networks connect enterprise sites and remote users. As well, they provide enhanced network capabilities, such as network security, network address translation and class of service, that enable service providers to offer a wide range of networking services beyond basic connection to the network.

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	•		Our Passport family of products, which have the ability to combine multiple services on a single platform, provide for reliable packet switching, as well as enabling emerging applications such as wireless packet core networking, radio access network aggregation, IP network aggregation, circuit networking traffic grooming and packet voice gateway applications.
	•		Our Shasta Broadband Service Node is designed to give service providers the ability to logically group tens of thousands of residential and business subscribers in order to re-direct them to various IP virtual private networks, and to centrally apply data network services, such as security, firewall applications and class of service, on a per subscriber and/or per application basis. These value-add services also play a key role in enabling next generation communications services, such as those enabled by our Succession voice over packet product portfolio. The Shasta Broadband Service Node supports a wide range of data network access technologies, including standard dial-up over copper telephone wire, digital subscriber line, ATM, wireless, frame relay and coaxial cable technologies.

Product development

     Research and development investments are focused on creating new and improving existing, packet-based residential and business services for wireline and wireless service providers and cable multiple system operators. As well, we continue to develop products that support the evolution of voice and data communications systems toward converged or combined voice and data networks including:

	•		Enhancements to our Succession packet voice solutions that will allow service providers to connect any business telephone system, using standard voice over IP protocols, into a common dialing plan with connectivity to the public switched telephone network. Additional enhancements to our packet voice solutions will focus on interoperability with other manufacturers, including gateway and integrated access device manufacturers, as well as on meeting the needs of the Asian and European markets.
	•		Enhancements to the Succession IMS that will allow a service provider to offer intelligent multimedia services across any manufacturers’ circuit switches. Additionally, development will focus on increasing the breadth and usability of the Succession IMS applications.
	•		Additions to the DMS portfolio that will allow service providers to offer and manage IP voice and multimedia (Centrex IP) services to those businesses that use traditional business telephones as well as to those business that use next generation telephones designed for use in IP networks.
	•		The development of a new, lower-capacity, next generation data product as well as enhancements to our existing line of Passport and Shasta data products that will increase capacity and speed.
	•		A focus on cable standards compliance to drive revenue from the cable multiple system operator market.

Markets

     With the growth of voice and data communications over the public telephone network, the public Internet and private voice and data communications networks, there is an increasing opportunity to converge disparate networks towards a single, high performance network that can support most types of communications traffic and applications. As data, voice and multimedia communications technologies continue to converge, we anticipate that in the future all communications networks will be able to carry data, voice and multimedia communications effectively, and we anticipate that these networks will use packet-based technologies. Converged voice and data networks also provide an opportunity for service providers to offer new revenue generating services while reducing their ongoing operational costs year over year as they incorporate packet-based technology in their networks. We believe our advantage lies in our ability to transition and upgrade our customers installed base of DMS and Passport solutions to packet-based solutions.

     To meet the growing demand for increased capacity which these new multimedia applications will drive at lower per-minute rates, we anticipate that service providers will transition their digital circuit-based voice communications to more cost effective packet-based technologies. As a result, we anticipate growth in demand for packet-based networking equipment that supports the convergence of data, voice and multimedia communications over a single communications network and that provides greater network capacity, reliability, speed, quality and performance. However, the timing of this convergence is unclear given the continuing industry adjustment and reduction in capital spending by our service provider customers spending.

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     We also expect new entrants, such as cable multiple system operators to increase the size of the voice and data market, as well as increase the competitive pressure on established service providers.

     The market for our Wireline Networks products is global. In the United States and Canada, many service providers have focused on reducing their capital spending in response to continuing industry adjustment and economic slowdown. However, service providers are expected over the long term to continue to modernize with packet-based networks and converge voice and data communications networks in order to deploy new revenue generating service offerings. As well, service providers are focused on capital spending that reduces their ongoing operational costs, albeit with emphasis on shorter payback periods. In EMEA, we continue to see market demand for certain networking products including equipment for voice over IP and equipment for virtual private networking. Service providers in EMEA are also focused on reducing their capital spending, and we anticipate that a higher portion of capital spending in 2003 will come from the leading national public telephone companies, as opposed to alternative service providers.

     In the Asia Pacific region, we continue to see market demand for certain networking products including equipment for voice over IP and equipment for virtual private networking. Deregulation in China has created opportunities for new entrants who we anticipate will build-out their networks with packet-based technologies. In CALA, service providers are also focused on reducing their capital spending tempered by the need to increase their revenue generating service offerings.

     For a discussion of important trends in Wireline Networks see “Results of operations — continuing operations — Wireline Networks” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Customers

     We offer our Wireline Networks products and services to a wide range of wireline and wireless service providers around the world. We are focused on increasing our market presence with key global service providers who we currently expect to account for a substantial proportion of service provider capital spending in 2003 and beyond. Our service provider customers include:

	•		incumbent local telephone companies (also known as incumbent local exchange carriers and post telegraph and telecommunications companies);
	•		competitive local telephone companies (also known globally as competitive local exchange carriers);
	•		long-distance telephone companies (also known as interexchange carriers in the United States);
	•		wireless service providers;
	•		internet service providers; and
	•		cable multiple system operators.

     We also offer applicable data networking and security solutions from our Wireline Networks to enterprises for private networking as well as to service providers and system integrators that build, operate and manage networks for their customers such as businesses, government agencies and utility organizations. None of our Wireline Networks customers represented more than 10 percent of Nortel Networks consolidated revenues in 2002.

Competition

     Our principal competitors are large communications companies, such as Cisco, Lucent, Alcatel, and Siemens. In addition, we compete with smaller companies that address specific niches within this market, such as Sonus Systems Limited, BroadSoft, Inc. and Taqua Inc. in packet and Internet-based voice communications solutions, Redback Networks Inc. in aggregation products, as well as Equipe Communications Corporation, Laurel Networks, Inc. and Wavesmith Networks, Inc. in ATM/multi-protocol label switching, multiservice core and edge switching. Certain competitors also are strong on a regional basis, such as ZTE Corporation and Huawei in the Asia Pacific region. Some niche competitors are partnering with larger companies to enhance their product offerings and large communications competitors are also looking for these partnerships or alliances to complete their product offerings. No one competitor is dominant in this market.

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The primary global factors of competition for our wireline products include:

	•		technology leadership, product features and availability;
	•		price and total cost of ownership;
	•		ability to create new revenue generating services for service providers and cable multi-system operators;
	•		conformity to existing and emerging regulatory and industry standards;
	•		installed base of products and customer relationships;
	•		network management capabilities;
	•		product quality and reliability; and
	•		warranty and customer support.

     The competition has increased in intensity given the continued decline in market demand, the substantially reduced availability of capital, the continued consolidation in the service provider industry, and the renewed focus by suppliers on selling to the remaining large service providers with financial resources.

Optical Networks

Products

     Our Optical Networks solutions portfolio addresses the varying communication needs of service providers and enterprises. Optical networks transport data, voice and multimedia communications within and between cities, countries or continents by transmitting communications signals in the form of light waves through fiber optic cables. Optical networking is the most common method for transporting communications signals between the various locations within a service provider’s network and is unmatched for delivering vast amounts of data reliably and cost-effectively with service and bandwidth flexibility and scalability.

     Our optical networking solutions are designed to provide metropolitan, regional and long-haul, high-capacity transport and switching of data, voice and multimedia communications signals. These solutions include photonic Dense Wavelength Division Multiplexing (DWDM) transmission solutions, synchronous optical transmission solutions, optical switching solutions and network management and intelligence software. We also offer our customers a variety of related engineering expertise, installation and support services worldwide.

	•		Photonic networking DWDM technology allows multiple light wave signals to be transmitted on the same fiber optic strand simultaneously by using different wavelengths of light to distinguish specific signals, thereby increasing the capacity and flexibility of a network. Our DWDM line systems include optical transmission terminals and optical transmission repeaters. Optical transmission terminals are connected at the ends of the fiber optic cable and send communication signals through this medium using light waves. Optical transmission repeaters are used at locations along fiber optic cables that span long distances to strengthen and reform light wave signals. Our OPTera long-haul DWDM line systems span distances up to 1200 kilometres without the need for optical transmission repeaters and allow the adding and dropping of communication signals at intermediate locations along the route. Our OPTera Metro 5000 metro DWDM series provides market leading protocol and bit rate tolerant scalable multi-service networking solutions within a city or region for up to 200 kilometres.
	•		Our synchronous optical transmission systems use traditional optical standards, including the Synchronous Optical Network (SONET) standard, which is the most common standard in the United States and Canada and some countries in the Asia Pacific region, and the Synchronous Digital Hierarchy (SDH) standard, which is the most common standard in EMEA and many other countries. Our synchronous optical transmission equipment includes our next-generation SONET/SDH solutions: the OPTera Metro 4000 family (next-generation SDH); the OPTera Metro 3000 family (next generation SONET); and the OPTera Metro Connect. These solutions deliver a multi-service optical platform that integrates diverse protocols and technology-based services over a cost effective, scalable and reliable converged services network.

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	•		Our optical switching solutions enable communication signals in optical fibers to be selectively directed or “switched” from one network circuit to another. Our optical switching products provide grooming, aggregation (the efficient re-packing of lower speed signals into higher speed signals to maximize the use of network capacity) and protection of the end users’ communications traffic. These systems focus on delivering cost-efficient solutions to switch large amounts of information between optical transmission systems. Our optical switching products include the OPTera Connect HDX and OPTera Connect DX platforms.
	•		Our network management software and intelligence solutions are designed to give our customers the ability to monitor and improve the performance of their networks. Our network management software includes our Preside for Optical end-to-end network management software portfolio which support the functions required for controlling, planning and monitoring the equipment and performance of an optical network, such as predetermined traffic routing, equipment configuration management, fault reporting, connection management, performance management and network security.

     Our Optical Networks solutions enable customers to enhance and transform their networks towards a scalable and reliable network for delivering diverse high speed data and voice connectivity services. Such network transformation will increase deployment of managed broadband services, such as:

	•		Optical Ethernet solutions that combine the ubiquity, flexibility and simplicity of the Ethernet network computing protocol with the reliability and speed of optics. Optical Ethernet solutions transport communications signals carrying Ethernet packets in the form of light waves through fiber optic cables between locations within a city or between cities. Our Optical Ethernet solutions:

	—		enable service providers to extend Ethernet’s benefits outside of local area networks and sell enterprises Ethernet connectivity services in conjunction with Internet access and other applications made possible due to greater bandwidth; and
	—		deliver economical site-to-site connectivity for enterprises through these solutions, which are designed to alleviate the congested and complex metropolitan networking bottleneck created by the wide range of users and services that exist within cities.

	•		Optical storage connectivity solutions, which allow the interconnection of data centers for the efficient preservation and sharing of business-critical data to ensure business continuity and disaster recovery.
	•		Managed wavelength solutions, which offer multiple protocol and transmission speed networking capability to reliably interconnect business sites.

Product development

     We are committed to providing next generation optical networking systems, including the evolution of our next generation SONET/SDH systems, our metro DWDM systems and our optical long-haul line and terminal solutions.

	•		New releases of our OPTera Metro portfolio are under development to enhance the services supported and the efficiency of service implementation.
	•		Our OPTera Connect HDX switching system had its first network deployment in 2002 with its first product release and the second release is currently under development to provide additional customer applications.
	•		We continue to invest in improving the density, capacity and flexibility of our optical long-haul transmission systems.

     We continue to invest in core technologies, such as efficient service adaptation, aggregation, switching and management that enable our customers worldwide to deploy innovative optical networking services which we believe will lead the networking transformation towards high performance packet-based networks.

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Markets

     We are a leading provider of optical networking products to service providers and enterprises around the world. Starting in 2001 and continuing through 2002, capital spending in optical networking equipment by service providers around the world decreased substantially. Service providers remain focused on maximizing return on invested capital by increasing capacity utilization rates and efficiency of existing networks. With the ongoing industry adjustment, many service providers with excess capacity in their optical networks continued to focus on optimizing existing networks and delayed the deployment of next generation products.

     The outlook for optical equipment sales is further impacted by service providers preferring to lease excess network capacity from others with excess capacity or to purchase assets from distressed operators rather than making capital investments in their networks. We expect that any additional capital spending by our customers will be increasingly directed to opportunities that enhance customer performance, generate revenue and reduce cost in the near term. However, as service providers begin to more effectively utilize and eventually exceed their network capacity, we expect that they may incrementally enhance their network capacity. In addition, regulatory developments in the United States and other countries, such as the recent success of regional bell operating companies in obtaining permission to offer long-distance voice services, may result in new capital spending by service providers. However, the timing and impact of these developments are difficult to predict.

     The market for our Optical Networks products is global. In the United States and Canada, we anticipate that new networks will no longer be built by service providers in anticipation of market demand, but will be more closely aligned with actual end user demand. Within EMEA, the building of pan-European optical networks by service providers is now mature and many service providers have begun to focus on building their metropolitan and regional optical networks. Some service providers in Europe are experiencing capital constraints after having invested in government licenses for 3G wireless networks, and have postponed significant optical network expansions. We expect that the increased usage of broadband wireless data provided by 3G may eventually drive the increased deployment of optical networks. In EMEA, European government-sponsored service providers and networking equipment suppliers enjoy favorable positions within many European countries, with foreign vendors such as Nortel Networks frequently limited to secondary vendor positions with these service providers.

     We expect that the Asia Pacific region, where the industry is continuing to undergo deregulation, may provide the largest market for optical networking equipment over the next several years. As a result, there has been an increased focus on the Asia Pacific region by virtually all suppliers of optical networking equipment. In CALA, where a few service providers account for a significant percentage of the industry, the building of national optical network infrastructures is largely complete. Prospects for increased capital expenditures have been dampened by the weak economic climate and the political uncertainty in the region.

     For a discussion of important trends in Optical Networks, see “Results of operations — continuing operations — Optical Networks” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Customers

     Our Optical Networks business is primarily focused on offering our optical networking products and services to service providers around the world. The service provider customers for our optical networking products include, local and long-distance telephone companies, cable multiple system operators, Internet service providers and other communications service providers. We are currently focused on increasing our market presence with key service provider customers worldwide, who we expect to account for a substantial proportion of service provider capital spending in 2003 and beyond.

     We are also focused on enterprises and we continue to provide optical solutions for private enterprise networking and also for service providers to build and operate custom dedicated networks for enterprises. We leverage numerous channels for delivering optical networking solutions to enterprises from our own direct sales force for large enterprises and governments and through distributors, resellers and partners to offer our solution to medium sized enterprises and smaller enterprises. None of our Optical Networks customers represented more than 10 percent of Nortel Networks consolidated revenues in 2002.

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Competition

     Our major competitors in the sale of optical networking equipment include Alcatel, Lucent, Siemens, Fujitsu Limited, Marconi plc, Cisco, Huawei, NEC, Ciena and ADVA International Inc. In 2002, we sold certain of our optical components assets and are therefore focused on competing primarily with optical systems vendors. Market position in the global market for optical networking equipment fluctuates significantly on a quarter-by-quarter basis. However, we continue to be a leading global provider of optical networking equipment. The primary global factors of competition for our Optical Networks products include:

	•		technology leadership, product features and availability;
	•		product quality and reliability;
	•		conformity to existing and emerging regulatory and industry standards;
	•		warranty and customer support;
	•		price and cost of ownership;
	•		interoperability with other networking products;
	•		network management capabilities;
	•		traditional supplier relationships, particularly in EMEA and the Asia Pacific region; and
	•		regulatory certification, particularly for incumbent local and long-distance telephone companies.

     We and many of our competitors have been negatively impacted by the severe decline in service provider optical network spending. As a result, our focus is on increasing market share relative to our competitors. In particular, the financial difficulties of certain of our competitors have created the potential for new relationships with international-incumbent service providers in EMEA and elsewhere. In addition, the competition from optical networking “start-up” companies has decreased due to general concerns by many service providers about these start-up companies’ long term viability.

Sales and distribution

     All of our four reportable segments use the Nortel Networks direct sales force to market and sell to customers around the world. The Nortel Networks global sale force is divided into regional groups. The head office for the United States and Canadian sales forces is located in Richardson, Texas and the EMEA sales force head office is based in Maidenhead, U.K. The Asia Pacific region’s head office is based in Hong Kong and there is also an office in Beijing for Greater China. The CALA sales force head office is based in Sunrise, Florida. Within these regional sales groups, we have dedicated sales account teams for certain major service provider customers. These dedicated teams are located close to the customer’s main purchasing locations. In addition, within the regional sales groups are teams dedicated to our enterprise customers. Our Enterprise Networks sales teams work directly with the top regional enterprises, and are also responsible for managing regional distribution channels. We also have centralized marketing, product management and technical support teams dedicated to individual product lines that support the global sales and support teams.

     In the Asia Pacific region, particularly in the People’s Republic of China, we also use agents to interface with our customers. In addition, we have some small non-exclusive distribution agreements with distributors in EMEA, CALA and the Asia Pacific region. In Enterprise Networks, certain service providers, system integrators, value added resellers and stocking distributors act as non-exclusive distribution channels for our products.

Product standards, certification and regulation

     Our products are subject to equipment standards, registration and certification in Canada, the United States and other countries. We design and manufacture our products to satisfy a variety of regulatory requirements and protocols established to, for instance, avoid interference among users of radio frequencies and to permit interconnection of equipment. For example, our equipment must satisfy the United States Federal Communications Commission emissions testing requirements, and must be certified to safety, electrical noise and communications standards compliance. Different regulations and regulatory processes exist in each country.

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     In order for our products to be used in some jurisdictions, regulatory approval and, in some cases specific country compliance testing and re-testing may be required. The delays inherent in this regulatory approval process may force us to reschedule, postpone or cancel introduction of products or new capabilities in certain geographic areas, and may result in reductions in our sales. The failure to comply with current or future regulations or changes in the interpretation of existing regulations in a particular country could result in the suspension or cessation of sales in that country or require us to incur substantial costs to modify our products to comply with the regulations of that country. To support our compliance efforts, we work with consultants and testing laboratories as necessary to ensure that our products comply with the requirements of Industry Canada in Canada, the Federal Communications Commission in the United States, and the European Telecommunications Standards Institute in Western Europe, as well as with the various regulations of other countries.

     The operations of our service provider customers are subject to extensive country-specific telecommunications regulations. In the United States, on February 20, 2003, the Federal Communications Commission (FCC), announced a decision in its triennial review proceeding of the rules regarding unbundled network elements (UNEs). The text of the FCC’s order and reasons for the decisions were not immediately released. Although the decision may impact the business decisions of our United States based service provider customers, the extent of that impact has not been determined. These UNE rules and/or material changes in other country-specific telecommunication regulations at any time or from time to time may affect capital spending by service providers in the United States and/or around the world, and this may in turn affect the United States and/or global market for networking solutions.

Sources and availability of materials

     We are generally able to obtain sufficient materials and components from global sources to meet the needs of our four reportable segments. In each of our reportable segments, we:

	•		make significant purchases of electronic components and assemblies, optical components, original equipment manufacturer, or OEM products, software products, outsourced assemblies and other materials and components from many domestic and foreign sources;
	•		develop and maintain alternative sources for certain essential materials and components; and
	•		occasionally maintain special inventories of components internally or request that they be maintained by suppliers to satisfy customer demand or to minimize effects of possible market shortages.

     Market conditions in 2002 were similar to conditions in 2001. With the ongoing industry adjustment, we continued to face supply surpluses and excess inventories in some areas including optical components, memory devices and semi-conductors. However, we were able to effectively manage our inventories in 2002 with minimal negative impact to our supply chain.

     During 2002, we continued to refine our relationships with our electronics manufacturing services suppliers by focusing on service, quality, cost reduction and inventory management. In 2003, we intend to focus on inventory management and component cost reduction, and expect to continue to purchase, manufacture, or otherwise obtain sufficient components and materials to supply our products, systems and networks within customary delivery periods.

     For more information on our supply arrangements, see “Guarantees and commitments” in note 12 of the accompanying consolidated financial statements and “Liquidity and capital resources — Commitments and guarantees — Supply and network outsourcing contracts” and “Off-balance sheet arrangements, contractual obligations and contingent liabilities and commitments — Contingent liabilities and commitments — Purchase commitments” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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Seasonality

     Prior to 2001, our business results in all of our reportable segments were generally strongest in our fourth quarter, second strongest in our second quarter, third strongest in our third quarter and the weakest in our first quarter, primarily due to the networking industry purchasing cycles exhibited by our customers. With the continued industry adjustment and economic downturn in the United States and elsewhere in 2001 and 2002, our customers have faced restricted capital markets, which affected their traditional purchasing patterns, the demand for our products and services and the traditional seasonality of our business. Although we anticipate our revenues in the first quarter of 2003 will be impacted by the seasonal softness traditionally typical of our first quarter, it is unclear whether, for the remainder of 2003 our customers will follow any seasonal pattern, or whether our business results will return to our historical revenue patterns. See “Forward-looking statements” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Strategic alliances, acquisitions and minority investments

     We use strategic alliances to deliver certain solutions to our customers. These alliances are typically formed to fill product or service gaps in areas that we do not consider to be part of our core businesses but support our core businesses. Strategic alliances also augment our access to potential new customers. We intend to continue to pursue strategic alliances with businesses that offer the technology and/or resources that would enhance our ability to compete in existing markets or exploit new market opportunities.

     We did not acquire any companies in 2002. However, in the future, we may consider selective opportunistic acquisitions of companies with resources and product or service offerings capable of providing us with additional enhancements to our networking solutions. For information regarding the risks associated with strategic alliances and acquisitions, see “Forward-looking statements” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

     We continue to hold minority investments in certain “start-up” businesses with technology, products or services that, at the time of investment, had the potential to fulfill key existing or emerging market opportunities. When minority investments are no longer required to maintain our strategic relationship, or the relationship is no longer strategic to our core businesses, we intend to exit such investments at an opportune time. In addition, our investment activity decreased in 2002 and we do not expect to increase our minority investments in start-up businesses in the near future. However, we may make selective minority investments in start-up ventures where we believe the relationship could lay the foundation for future alliances that would support our customer solutions.

Research and development

     We intend to continue to make strategic investments in our research and development activities, to remain among the technology leaders in anticipated growth areas. Our research and development activities — specifically, research, design and development, systems engineering and other product development activities — represent focused investments to drive market leadership across our product portfolios. We refer you to the four “Product Development” discussions contained in the descriptions of Wireless Networks, Enterprise Networks, Wireline Networks and Optical Networks above.

     Our research and development investments are focused on network transformations and next generation core products including packetized networks, secure multimedia services, broadband and the dynamic optical foundation. We also conduct network planning and systems engineering on behalf of, or in conjunction with, major customers. Although we derive many of our products from substantial internal research and development activities, we supplement this with technology acquired or licensed from third parties.

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     Our research and development forms a core strength and a factor differentiating us from many of our competitors. As at December 31, 2002, we employed approximately 13,720 regular full-time research and development employees (excluding employees on notice of termination) including approximately:

	•		5,770 regular full-time research and development employees in Canada;
	•		5,410 regular full-time research and development employees in the United States;
	•		2,200 regular full-time research and development employees in EMEA; and
	•		340 regular full-time research and development employees in other countries.

We also conduct research and development activities through affiliated laboratories in other countries.

     The following table sets forth our consolidated expenses for research and development for each of the last three fiscal years ended December 31:

Intellectual property

     Our intellectual property is fundamental to the Company and business of each of our four reportable segments. We generate, maintain, utilize and enforce a substantial portfolio of intellectual property rights, including trademarks, and an extensive portfolio of patents covering significant innovations arising from research and development activities. In all of our reportable segments, we use our intellectual property rights to protect our investments in research and development activities, to strengthen our leadership positions, to protect our good name, to promote our brand name recognition, to enhance our competitiveness and to otherwise support our business goals and objectives.

     As of December 31, 2002, we have, on a consolidated basis, approximately:

	•		2,800 United States patents;
	•		2,650 patents in other countries; and
	•		6,000 pending patent applications worldwide.

     In 2002, we were granted 441 United States patents, continuing our plan of improving our patent holdings. At December 31, 2002, our patents were primarily allocated as follows:

	•		23 percent to Wireless Networks;
	•		22 percent to Enterprise Networks;
	•		24 percent to Wireline Networks;
	•		12 percent to Optical Networks; and
	•		19 percent span multiple reportable segments or relate to other areas.

     Our patents outside of the United States are primarily counterparts to our United States patents. We have entered into some mutual patent cross-license agreements with several major corporations to enable each party to operate without risk of a patent infringement claim from the other. In addition, we are actively licensing certain of our patents and/or technology to third parties. We also occasionally license single patents or groups of patents from third parties.

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     Our trademark and trade name, Nortel Networks, is one of our most valuable assets. We sell our products primarily under the Nortel Networks brand name. We have registered the Nortel Networks trademark, and many of our other trademarks, in countries around the world. On a consolidated basis as of December 31, 2002, we own approximately 130 registered trademarks in the United States, and approximately 2,100 registered trademarks in other countries. In addition, we have approximately 200 pending trademark registrations worldwide.

Employee relations

     At December 31, 2002, we employed approximately 36,960 regular full-time employees (excluding employees on notice of termination), including approximately:

	•		13,780 regular full-time employees in the United States;
	•		10,140 regular full-time employees in Canada;
	•		8,350 regular full-time employees in EMEA; and
	•		4,690 regular full-time employees in other countries.

     We also employ individuals on a part-time basis, and we engage the services of independent contractors. As part of our resizing activities to further reduce our cost structure and streamline operations, we notified for termination and provisioned for the exit of approximately 12,700 regular full time employees during 2002. As well, the divestiture of non-core businesses completed or entered into in 2002 resulted in additional employee reductions. For additional information, see “Special charges” in note 6 to the accompanying consolidated financial statements and “Results of operations — continuing operations — Operating expenses — Special charges” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

     Labor contracts cover approximately five percent of our employees worldwide. Five labor contracts cover approximately 12 percent of our employees in Canada including:

	•		one labor contract covering approximately nine percent of Canadian unionized employees which was renewed, ratified and became effective February 26, 2003;
	•		one labor contract covering less than one percent of Canadian unionized employees which expires in the third quarter of 2003;
	•		two labor contracts covering approximately 74 percent of Canadian unionized employees which expire in 2004; and
	•		one labor contract covering approximately 17 percent of Canadian unionized employees which expires in 2008.

     Labor contracts cover approximately four percent of our employees in EMEA and all of our employees in Brazil. The labor contracts generally have a one-year term in EMEA and Brazil, and primarily relate to remuneration. We have no labor contracts in the United States.

     We believe our employee relations are generally positive. We are currently focused on rebuilding employee morale following the substantial workforce reductions and other restructuring activities in 2001 and 2002. Although the recruitment and retention of technically skilled employees in recent years was highly competitive in the global networking industry, current economic conditions have lessened the competition for skilled employees in our industry. We do, however, believe that our ability to recruit and retain skilled employees will continue to be critical to our future success. See “Forward-looking statements” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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Environmental matters

     Our manufacturing and research operations are subject to a wide range of environmental protection laws in various jurisdictions around the world. We seek to operate our business in compliance with such laws, and have a corporate environmental management system standard and an environmental protection program to promote compliance. We also have a periodic, risk-based, integrated environment, health and safety audit program. As part of our environmental program, we attempt to evaluate and assume responsibility for the environmental impacts of our products throughout their life cycles. Our environmental program focuses on design for the environment, supply chain and packaging reduction issues. We work with our suppliers and other external groups to encourage the sharing of non-proprietary information on environmental research. For additional information on environmental matters, see “Contingencies-Environmental matters” in note 20 of the accompanying consolidated financial statements.

Financial information by operating segment and product category

     For financial information by operating segment and product category, see “Segmented information” in note 5 of the accompanying consolidated financial statements and “Results of operations — continuing operations — Segment revenues” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Financial information by geographic area

     For financial information by geographic area, see “Segmented information” in note 5 of the accompanying consolidated financial statements and “Results of operations — continuing operations — Geographic revenues” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Working capital

     For a discussion of our working capital, see “Long-term debt and credit facilities” in note 10 of the accompanying consolidated financial statements and “Liquidity and capital resources” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Risk factors

     THIS ANNUAL REPORT ON FORM 10-K CONTAINS FORWARD-LOOKING INFORMATION THAT IS SUBJECT TO IMPORTANT RISKS AND UNCERTAINTIES. THE RESULTS OR EVENTS PREDICTED IN THESE STATEMENTS MAY DIFFER MATERIALLY FROM ACTUAL RESULTS OR EVENTS. RESULTS OR EVENTS COULD DIFFER FROM CURRENT EXPECTATIONS AS A RESULT OF A WIDE RANGE OF RISK FACTORS. FOR INFORMATION REGARDING SOME OF THE RISK FACTORS INVOLVED IN OUR BUSINESS AND OPERATIONS, SEE “FORWARD-LOOKING STATEMENTS” IN MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

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ITEM 2.     Properties

     At December 31, 2002, we operated 229 sites around the world occupying approximately 15.5 million square feet. The following table sets forth additional information regarding these sites:

     At December 31, 2002, our facilities were primarily used as follows:

	•		12 percent by Wireless Networks;
	•		5 percent by Enterprise Networks;
	•		6 percent by Wireline Networks;
	•		5 percent by Optical Networks;
	•		25 percent by global operations; and
	•		47 percent by one or more of our reporting segments and/or corporate facilities.

     As part of our work plan, we continued to substantially reduce the number of sites and square footage of our global facilities to better align ourselves with current market conditions.

     Security over substantially all of Nortel Networks Limited’s assets, including real estate assets in North America, became effective in April 2002 under certain credit and security agreements entered into by Nortel Networks Limited and several of its subsidiaries. If Nortel Networks Limited’s senior long-term debt rating by Moody’s returns to Baa2 (with a stable outlook) and its rating by Standard & Poor’s returns to BBB (with a stable outlook), the security, including the pledge over the real estate assets, will be released in full. If both the $750 April 2000 five year credit facilities and the support facility with Export Development Canada, or EDC, are terminated or expire, the security will also be released in full. We may provide EDC with cash collateral (or any other alternative collateral acceptable to EDC), in an amount equal to the total amount of our outstanding obligations and undrawn commitments and expenses under this facility, in lieu of the security provided under the security agreements. We believe our facilities are suitable and adequate, and have sufficient capacity to meet our current needs.

     For additional details, see “Special charges” in note 6 and “Long-term debt and credit facilities” in note 10 of the accompanying consolidated financial statements, and “Liquidity and capital resources — Sources of liquidity” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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ITEM 3.     Legal Proceedings

     For a discussion of our material legal proceedings, see “Contingencies” in note 20 of the accompanying Consolidated Financial Statements, and “Legal proceedings” in Management’s Discussion and Analysis of Financial Condition and Results of Operations.

ITEM 4.     Submission of Matters to a Vote of Security Holders

     Not applicable.

ITEM 4A.     Executive Officers and Certain Other Non-executive Board Appointed Officers of the Registrant

     The executive officers and certain other non-executive board appointed officers of Nortel Networks Corporation are appointed, and may be removed, by the Board of Directors of Nortel Networks Corporation. As of February 28, 2003, the names of the executive officers and non-executive board appointed officers of Nortel Networks Corporation, their ages, offices currently held and year of appointment thereto were as follows:

*

Non-executive board appointed officers

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     All the above-named executive officers and non-executive board appointed officers of Nortel Networks Corporation have been employed in their current position or other senior positions with Nortel Networks during the past five years, except as follows:

	•		D.C. Beatty was, prior to returning to Nortel Networks in March 1999, Vice President, Finance of Sprint Canada Inc., a telecommunications company, from December 1995;
	•		J.M. Doolittle was, prior to returning to Nortel Networks in September 1999, Vice President, Finance of The Bank of Montreal, a Canadian chartered bank, from August 1997 and Director, Treasury, Europe and Asia, Nortel Networks, prior thereto;
	•		R.Y.L. Mao was, prior to returning to Nortel Networks in January 2003, Chairman and Chief Executive Officer of Foxconn (Beijing) Precision Component Industries, Ltd., a manufacturer of mobile communication terminal devices, from November, 2002 to December, 2002, and Chief Executive Officer, Nortel China, Nortel Networks, prior thereto; and
	•		L.F. Mezon was, prior to joining Nortel Networks in May 2001, Vice-President & Corporate Controller of Geac Computer Corporation Limited, a software application provider, from October 1999, Vice-President, Finance and Chief Financial Officer from March 1999 to October 1999 of Beamscope Canada Inc., a computer distributor that was placed into receivership over a year later in March 2001 after having filed for protection under the Companies Creditors Arrangement Act (Canada) in November 2000, Vice-President, Business Optimization of Bell Mobility Inc., a wireless service provider, from March 1998 and Vice-President & Comptroller of Bell Mobility prior thereto.
	•		M.E. Pahapill was, prior to joining Nortel Networks in April 1998, Vice-President, Finance and Administration of Seymour Epstein Enterprises, a private investment management company, from September 1995.

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PART II

ITEM 5.     Market for the Registrant’s Common Equity and Related Stockholder Matters

     The common shares of Nortel Networks Corporation are listed and posted for trading on the New York Stock Exchange in the United States and on the Toronto Stock Exchange in Canada. The following table sets forth the high and low sale prices of the common shares as reported on the New York Stock Exchange composite tape and on the Toronto Stock Exchange.

     On February 28, 2003, the last sale price on the New York Stock Exchange was $2.150 and on the Toronto Stock Exchange was Canadian $3.220.

     On February 28, 2003, approximately 206,400 registered shareholders held 100 percent of the outstanding common shares of Nortel Networks Corporation. This included the Canadian Depository for Securities and the Depository Trust Company, two clearing corporations, which held a total of approximately 95.87 percent of the common shares of Nortel Networks Corporation on behalf of other shareholders.

Securities authorized for issuance under equity compensation plans

     For a discussion of Nortel Networks equity compensation plans, please see “Equity compensation plan information” in Item 12, “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters”.

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Dividends

     On June 15, 2001, Nortel Networks Corporation announced that its Board of Directors decided to discontinue the declaration and payment of common share dividends. As a result, dividends have not been declared and paid on Nortel Networks Corporation common shares since June 29, 2001, and future dividends will not be declared unless and until the Board of Directors decides otherwise. On July 26, 2001, the Board of Directors of Nortel Networks Corporation suspended the operation of the Nortel Networks Corporation Dividend Reinvestment and Stock Purchase Plan.

     In the first and second quarter of 2001, Nortel Networks Corporation declared and paid a cash dividend of $0.01875 per common share. This represents a total dividend of $0.0375 per common share for 2001 and aggregate dividend payments of $123 million.

Canadian tax matters

Dividends

     Under the United States-Canada Income Tax Convention (1980), or the Convention, Canadian withholding tax of 15 percent generally applies to the gross amount of dividends (including stock dividends) paid or credited to beneficial owners of Nortel Networks Corporation common shares:

	•		who are resident in the United States for the purposes of the Convention; and
	•		who do not hold the shares in connection with a business carried on through a permanent establishment or a fixed base in Canada.

     The Convention provides an exemption from withholding tax on dividends paid or credited to certain tax-exempt organizations that are resident in the United States for purposes of the Convention. Persons who are subject to the United States federal income tax on dividends may be entitled, subject to certain limitations, to either a credit or deduction with respect to Canadian income taxes withheld with respect to dividends paid or credited on Nortel Networks Corporation common shares.

Sales or Other Dispositions of Shares

     Gains on sales or other dispositions of Nortel Networks Corporation common shares by a non-resident of Canada are generally not subject to Canadian income tax, unless the holder realizes the gains in connection with a business carried on in Canada. A gain realized upon the disposition of Nortel Networks Corporation common shares by a resident of the United States that is otherwise subject to Canadian tax may be exempt from Canadian tax under the Convention. Where Nortel Networks Corporation common shares are disposed of by way of an acquisition of such common shares by Nortel Networks Corporation, other than a purchase in the open market in the manner in which common shares would normally be purchased by any member of the public in the open market, the amount paid by Nortel Networks Corporation in excess of the paid-up capital of such common shares will be treated as a dividend, and will be subject to non-resident withholding tax as described above under the heading “Dividends”.

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Sales of unregistered securities

     During the fourth quarter of 2002, Nortel Networks Corporation issued an aggregate of 82,026 common shares upon the exercise of options granted under the Nortel Networks/BCE 1985 Stock Option Plan and the Nortel Networks/BCE 1999 Stock Option Plan. The common shares issued on the exercise of these options were issued outside of the United States to BCE in connection with options that expired unexercised or were forfeited. The common shares issued are deemed to be exempt from registration under the United States Securities Act of 1933, as amended, pursuant to Regulation S. All funds received by Nortel Networks Corporation in connection with the exercise of stock options granted under the two Nortel Networks/BCE stock option plans are transferred in full to BCE pursuant to the terms of the May 1, 2000 plan of arrangement, except for nominal amounts paid to Nortel Networks Corporation to round up fractional entitlements into whole shares. Nortel Networks Corporation keeps these nominal amounts and uses them for general corporate purposes.

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ITEM 6.   Selected Financial data (unaudited)

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ITEM 7.   Management’s Discussion and Analysis of Financial Condition and Results of Operations

     You should read this section in combination with the accompanying audited consolidated financial statements prepared in accordance with United States generally accepted accounting principles. This section contains forward-looking statements and should be read in conjunction with the factors described below under “Forward-looking statements”. All dollar amounts in this Management’s Discussion and Analysis of Financial Condition and Results of Operations are in millions of United States dollars unless otherwise stated.

     Where we say “we,” “us,” “our,” or “Nortel Networks,” we mean Nortel Networks Corporation and its subsidiaries. Where we refer to the “industry”, we mean the telecommunications industry.

Business overview

     Nortel Networks Corporation is an industry leader and innovator focused on transforming how the world communicates and exchanges information. We supply products and services that support the Internet and other public and private data, voice and multimedia communications networks using wireline and wireless technologies, which we refer to as “networking solutions”. A substantial portion of our company has a technology focus and is dedicated to research and development. This focus forms a core strength and a factor differentiating us from many of our competitors. We envision an information society where people will be able to connect and interact with information and with each other instantly, simply and reliably, seamlessly accessing data, voice and multimedia communications services and sharing experiences anywhere, anytime.

     Our operations are organized in four reportable segments: Wireless Networks; Enterprise Networks; Wireline Networks; and Optical Networks.

     Nortel Networks Corporation’s common shares are publicly traded on the New York and Toronto stock exchanges under the symbol “NT”. Nortel Networks Limited is our principal direct operating subsidiary. Nortel Networks Corporation holds all of Nortel Networks Limited’s outstanding common shares but none of its outstanding preferred shares.

Developments in 2002

Business segments re-organizations

     During the third quarter of 2002, we changed the way we managed our business to streamline and focus more directly on our customers in our four core business areas: Wireless Networks; Enterprise Networks (formerly part of Metro and Enterprise Networks); Wireline Networks (formerly part of Metro and Enterprise Networks); and Optical Networks (formerly named Optical Long-Haul Networks). During the second quarter of 2002, we shifted the accountability for the metro optical portion of Metro and Enterprise Networks into Optical Networks. All financial information has been restated to reflect these re-organizations.

Optical Networks

     On May 29, 2002, we announced plans to further realign our Optical Networks segment, including optical components, as we do not expect a meaningful recovery in the long-haul optical market before early 2004. As part of this realignment, we sold certain optical components assets to Bookham Technology plc, or Bookham, in November 2002 for shares, warrants, debt and cash consideration resulting in a gain of $26. The transaction included a minimum purchase commitment of $120. The terms of the commitment require us to purchase approximately $120 of product from Bookham prior to March 31, 2004 and to make a cash payment to Bookham for a portion of any shortfall in the purchase commitment. For additional information, see “Divestitures, closures and acquisitions” in note 9 of the accompanying consolidated financial statements.

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Equity offerings

     On June 12, 2002, Nortel Networks Corporation issued:

	•		632,500,000 common shares; and
	•		28,750 equity units, each initially confirming the holder’s ownership of:

			— a prepaid forward purchase contract, entitling the holder to receive Nortel Networks Corporation common shares; and
			— specified zero-coupon U.S. treasury strips.

     The two offerings resulted in net proceeds of approximately $1,479 to be used for general corporate purposes. The settlement date for each purchase contract is August 15, 2005, subject to acceleration or early settlement in certain cases. The total number of Nortel Networks Corporation common shares issuable on the settlement date of the purchase contracts will be between approximately 485 million and 582 million depending on the average closing prices of our common shares on the New York Stock Exchange during a period shortly before the settlement date. The actual number of common shares issued will also be subject to some anti-dilution adjustments as well as adjustments if the proposed consolidation of our common shares is completed. During 2002, holders of 28 purchase contracts exercised their early settlement rights and received 448,309 common shares. During the period from January 1, 2003 to February 28, 2003, an additional 641 purchase contracts were settled early and 10,823,879 common shares were issued. As of February 28, 2003, there were 28,081 purchase contracts outstanding.

     For additional information on the equity offerings, see “Capital stock” in note 14 of the accompanying consolidated financial statements.

     The equity offerings utilized approximately $1,700 of the $2,500 available under our shelf registration statement filed with the United States Securities and Exchange Commission and our base shelf prospectus filed with the applicable securities regulatory authorities in Canada during the second quarter of 2002. Approximately $800 remains available under the shelf registration and base shelf prospectus for the potential sale of various types of securities by Nortel Networks Corporation and/or Nortel Networks Limited. See “Shelf registration statement and base shelf prospectus” for additional information.

Credit facilities

     On December 13, 2002, we announced amendments to our existing security agreements to facilitate our future financial flexibility. These security agreements pledged substantially all of Nortel Networks Limited’s assets in favor of certain lenders and the holders of our public debt. As part of the amendments, we terminated the $1,175 April 2002 364-day revolving facilities that would have expired in April 2003. Also, on December 13, 2002, our $1,510 December 2001 364-day credit facilities expired and were not extended. As of December 31, 2002, our $750 April 2000 five year credit facilities remained available and undrawn. See “Available credit and support facilities” for additional details.

Debt rating downgrades

     On April 4, 2002, Moody’s Investor Services, Inc. lowered Nortel Networks Limited’s senior long-term debt rating below investment grade to Ba3 and on November 1, 2002, lowered the rating from Ba3 to B3 with a negative outlook.

     On April 9, 2002, Standard & Poor’s Ratings Service lowered Nortel Networks Limited’s credit rating to below investment grade to BB- and on September 18, 2002, lowered the rating from BB- to B with a negative outlook.

     As a result of the April 2002 debt rating downgrades, various liens, pledges and guarantees became effective under certain credit and security agreements entered into by Nortel Networks Limited and several of its subsidiaries. Our obligations under our public debt and our support facility entered into with Export Development Canada, or EDC, on February 14, 2003 are secured by these liens, pledges and guarantees. Further, any amounts drawn under our $750 April 2000 five year credit facilities would also be secured by these liens, pledges and guarantees.

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     See “Liquidity and capital resources” for additional details on our credit ratings and the granting of security under our credit and support facilities. For additional financial information related to those subsidiaries providing guarantees, see “Supplemental consolidating financial information” in note 22 of the accompanying consolidated financial statements.

Deferred income taxes

     As part of our quarterly review procedures, we performed an evaluation of the recoverability of our deferred income tax assets. In the third quarter of 2002, in addition to recording a write down of our existing deferred tax asset, we began recording full valuation allowances against the benefit of our quarterly losses. In 2002, we recorded a net income tax benefit of $478 on a pre-tax loss of $4,063. Our gross income tax valuation allowances in 2002 were $1,140, including certain additional income tax valuation allowances of $532. If market conditions deteriorate further or future results of operations are less than expected, additional tax valuation allowances may be required for all or a portion of our deferred tax assets. See “Income tax benefit” for additional information.

Employee benefit plans

     In the fourth quarter of 2002, we recorded a non-cash charge of $692 ($559 after-tax) to shareholders’ equity related to the increase in the minimum required recognizable deficit associated with our registered defined benefit pension plans. This charge was the result of the negative impact that changes in global capital markets and interest rates have had on our pension plan assets and obligations.

     During 2002, we made $75 in required cash contributions to our registered defined benefit pension plans as well as additional voluntary contributions of $75. In 2003, we expect required cash contributions under applicable legislation to be similar to those made in 2002. For additional information on our registered defined benefit pension plans, see “Application of critical accounting policies”.

Restructuring and asset write downs

     We recorded special charges of $2,298 in 2002 and $15,781 in 2001. These charges related to restructuring activities and write downs of goodwill and other assets. The special charges relating to restructuring were associated with our work plan to streamline operations and activities around core markets and leadership strategies. We began implementing our work plan in 2001 and it has continued throughout 2002. The goodwill write down in 2002 related to a fair value impairment in our Optical Networks segment. We expect that additional charges will be required in 2003 related to our remaining announced workforce reductions and related charges. See “Special charges” for additional information.

Common shares

     At the close of trading on July 19, 2002, Standard & Poor’s changed the members of certain S&P indices, replacing the seven members of the S&P 500 index that were not incorporated in the United States, including Nortel Networks, with seven companies that were incorporated in the United States. At the same time, we were also replaced in the S&P 100 index. Our membership in the S&P/TSX 60 and the S&P Global 1200 indices was unaffected by these changes.

Developments in 2003

Support facility with EDC

     On February 14, 2003, we announced that Nortel Networks Limited had entered into an agreement with EDC regarding arrangements to provide for support, on a secured basis, of certain of our performance-related obligations arising out of normal course business activities. This facility provides for up to $750 in performance-related support for our operations and is expected to facilitate improved liquidity. Currently, only $300 is committed support for performance bonds (within certain parameters). See “Available credit and support facilities” for additional information.

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Common shares

     On September 25, 2002, we announced our plan to present a proposal to our shareholders for a consolidation of our outstanding common shares, also known as a reverse stock split, at our 2003 annual and special shareholders meeting. On February 14, 2003, we announced that we would ask our shareholders to authorize our Board of Directors to implement a consolidation of our common shares, at their sole discretion, at any time prior to April 15, 2004. If a consolidation is determined to be in the best interests of Nortel Networks and its shareholders, our Board of Directors will select a consolidation ratio within the range of one post-consolidation common share for every five pre-consolidation common shares to one post-consolidation common share for every ten pre-consolidation common shares.

Stock options

     We adopted fair value accounting for new grants of stock options beginning January 1, 2003. As a result, all stock option grants in 2003 and beyond will be expensed over the stock option vesting period based on the fair value at the date the options are granted. If we were to grant options in 2003 at a similar level to 2002, the expected impact on net earnings (loss) per share would be approximately ($0.01) per common share for 2003. For additional information, see “Significant accounting policies” in note 2(t) of the accompanying consolidated financial statements.

Shareholder rights plan

     On February 14, 2003, we announced that we will be seeking shareholder approval at our 2003 annual and special shareholders meeting for reconfirmation and amendment of our shareholder rights plan which was originally approved by shareholders in April 2000. Under the rights plan, we issue one right for each common share outstanding. These rights become exercisable upon the occurrence of certain events associated with an unsolicited takeover bid. See “Capital stock” in note 14 of the accompanying consolidated financial statements for additional information.

Results of operations — continuing operations

Segment revenues

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Geographic revenues