KT, LG-Nortel and Nortel Combine Expertise at Mobile WiMAX Service Conformance Verification Center

Testbed Environment Enables Wireless Interoperability, Readiness Evaluation of Mobile WiMAX Enabled Devices, Applications and Servers SEOUL, KOREA -- (MARKET WIRE) -- June 06, 2007 -- KT, Korea's leading telecommunications service provider, LG-Nortel and Nortel(1) (TSX: NT)(NYSE: NT) have launched a joint collaboration initiative at KT's Mobile WiMAX Service Conformance Verification Center (SCVC) in Seoul, South Korea. LG-Nortel is a joint venture of LG Electronics and Nortel. The laboratory provides a venue for customers and other third parties to evaluate the compliance of their products with Mobile WiMAX (IEEE802.16e-2005) standards as well as test applications and equipment from different manufacturers for seamless communications. LG-Nortel and Nortel will supply and install Nortel's innovative Mobile WiMAX technology at the center, and provide ongoing technical support. Building on KT's experience delivering WiBro and Mobile WiMAX technology to the South Korea market, the SCVC will contribute to developing a seamless transition path to facilitate the adoption of global-standard Mobile WiMAX and interoperability with existing and future WiBro equipment. The center will also facilitate KT's own transition from existing Single Input / Single Output (SISO) to next-generation Multiple Input / Multiple Output (MIMO) antennae, enabling KT to take advantage of the benefits of MIMO technology. These benefits include high bandwidth, improved range, and high mobility at a lower cost. "Consistent with our 'Life is Wonderful' motto, KT's vision is to deliver highly optimized services for maximizing customer satisfaction," said Chan Kyung Park, vice president, WiBro Technology Department of the WiBro Business Group, KT Corp. "We have considerable experience in using innovative WiBro technology to deliver a richer wireless broadband experience to customers. Collaborating with LG-Nortel and Nortel in this test environment will help further that success by ensuring new Mobile WiMAX technologies integrate smoothly into South Korea's world-leading WiBro wireless broadband infrastructure." "Mobile WiMAX has emerged as one of the world's leading 4G wireless broadband access technologies and it will play a significant role in the further expansion of cutting-edge information services across South Korea and the rest of the world," said Peter MacKinnon, chairman, LG-Nortel and general manager, Nortel WiMAX and Wireless Mesh. "The opening of the Mobile WiMAX Service Conformance Verification Center with KT will provide access to advanced Nortel 4G technologies to help members of the expanding wireless broadband ecosystem shape the next generation of wireless information services." The SCVC is built around Nortel's innovative WiMAX technology, delivering an end-to-end solution comprised of Nortel's WiMAX Base Transceiver Station (BTS) 5000 - the world's first MIMO-powered solution, Access Service Network (ASN) Gateway, Connectivity Service Network (CSN), and WiMAX PCMCIA cards provided by Nortel's multi-vendor ecosystem members. Nortel recently announced the WiMAX 4G Ecosystem Center of Excellence in Taiwan which will promote interoperability across WiMAX devices and applications such VoIP, video streaming and IPTV. Nortel has been involved in the development of OFDM/MIMO for more than eight years, and plays a leading role in the standardization of WiMAX technology. Nortel is a member of the WiMAX Forum and recently joined 32 other companies at WiMAX Forum's third annual PlugFest to conduct interoperability testing of its MIMO-enabled WiMAX solutions. The WiMAX Forum is an industry organization that promotes the interoperability and certification of wireless products for the delivery of faster, more affordable data, voice and video services. Nortel is conducting WiMAX trials and completing network deployments around the world, notably with Chunghwa Telecom and the National Taiwan University in Taiwan, Austar in Australia, Quad-Cities Online and MSV in the United States, Wind Telecom in the Dominican Republic, Craig Wireless in Greece, Golden Telecom in Russia, Telefonica Moviles in Mexico and TVA in Brazil, as well as with Japan's Ministry of Internal Affairs and Communications. About KT KT, Korea's top integrated wired/wireless communications service provider, has been Korea's leader in the development of the information and communications business for the last 25 years. In that same time, it has helped turn Korea into an IT powerhouse with the world's leading technology in the operation of broadband service. With the commercial launch of the world's first wireless broadband service (WiBro), KT is paving the way for U-Korea with ubiquitous infrastructure through which people can share information wherever they are. About LG-Nortel LG-Nortel is a joint venture of LG Electronics and Nortel. Established in 2005, LG-Nortel provides leading edge telecommunications equipment and network solutions, spanning wired and wireless technologies, to service provider and enterprise customers in Korea and around the world. LG-Nortel is also actively developing next generation solutions for global markets, with over 1,000 skilled R&D engineers currently focused on wireless broadband technology evolution and the development of powerful new product lines. For more information on LG-Nortel, visit www.lg-nortel.com. About Nortel Nortel is a recognized leader in delivering communications capabilities that make the promise of Business Made Simple a reality for our customers. Our next-generation technologies, for both service provider and enterprise networks, support multimedia and business-critical applications. Nortel's technologies are designed to help eliminate today's barriers to efficiency, speed and performance by simplifying networks and connecting people to the information they need, when they need it. Nortel does business in more than 150 countries around the world. For more information, visit Nortel on the Web at www.nortel.com. For the latest Nortel news, visit www.nortel.com/news. Certain statements in this press release may contain words such as "could", "expects", "may", "anticipates", "believes", "intends", "estimates", "targets", "envisions", "seeks" and other similar language and are considered forward-looking statements or information under applicable securities legislation. These statements are based on Nortel's current expectations, estimates, forecasts and projections about the operating environment, economies and markets in which Nortel operates. These statements are subject to important assumptions, risks and uncertainties, which are difficult to predict and the actual outcome may be materially different from those contemplated in forward-looking statements. For additional information with respect to certain of these and other factors, see Nortel's Annual Report on Form10-K, Quarterly Reports on Form 10-Q and other securities filings with the SEC. Unless otherwise required by applicable securities laws, Nortel disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. (1) Nortel, the Nortel logo and the Globemark are trademarks of Nortel Networks. LG-Nortel and the LG-Nortel logo are trademarks of LG-Nortel. Contacts: LG-Nortel Bohyun Kim +82 2 2005 2128 Email: kimvo@lg-nortel.com LG-Nortel Hyun Chul Ahn +82 2 2005 2127 Email: hcan@lg-nortel.com Website: www.lg-nortel.com