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Nortel Obtains Further Extension of Stay Period Under CCAA

Announces Management Changes

TORONTO – Nortel* Networks Corporation [OTC: NRTLQ] announced today that it, its principal operating subsidiary Nortel Networks Limited (NNL) and its other Canadian subsidiaries that filed for creditor protection under the Companies’ Creditors Arrangement Act (CCAA) have obtained an order from the Ontario Superior Court of Justice (Canadian Court) further extending, to April 13, 2012, the stay of proceedings that was previously granted by the Canadian Court. The purpose of the stay of proceedings is to provide stability to the Nortel companies to continue with the wind down of operations and other significant work toward the development of a plan of arrangement under CCAA and conclusion of the creditor protection proceedings.

The materials filed in the CCAA proceedings are available on the Restructuring Document Centre of Ernst & Young Inc. (the Monitor) at http://documentcentre.eycan.com/Pages/Main.aspx?SID=89&Redirect=1 or by contacting the Monitor directly at 1-866-942-7177.

Management Changes

In light of the milestones met to date and the focus of the remaining work, John Doolittle, Senior Vice-President Corporate Services & Chief Financial Officer, and the Board of Directors, have jointly determined that it is an appropriate point for Mr Doolittle to step down from his position and to depart from the Company on December 16, 2011. Effective December 17, 2011, Allan Bifield will assume the role of Senior Vice-President Corporate Services & Chief Financial Officer of the Company and NNL. Mr Bifield has been the Chief Financial Officer and Senior Vice-President for the Nortel Business Services organization since 2010, and previously held various positions in the Finance organization of the Company for over 25 years.

About Nortel

For more information, visit Nortel on the Web at www.nortel-canada.com. For the latest Nortel news, visit www.nortel-canada.com.

Certain statements in this press release may contain words such as “could”, “expects”, “may”, “should”, “will”, “anticipates”, “believes”, “intends”, “estimates”, “targets”, “plans”, “envisions”, “seeks” and other similar language and are considered forward-looking statements or information under applicable securities laws. 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 that are difficult to predict, and the actual outcome may be materially different. Nortel’s assumptions, although considered reasonable by Nortel at the date of this press release, may prove to be inaccurate and consequently Nortel’s actual results could differ materially from the expectations set out herein.

Actual results or events could differ materially from those contemplated in forward-looking statements as a result of the following: (i) risks and uncertainties relating to the Creditor Protection Proceedings including: (a) risks associated with Nortel’s ability to: obtain required approvals and successfully consummate pending and future divestitures; ability to satisfy transition services agreement obligations in connection with divestiture of operations; successfully conclude ongoing discussions for the sale of Nortel’s remaining assets; develop, obtain required approvals for, and implement a court approved plan; allocation of the sale proceeds of our businesses among the various Nortel entities participating in these sales may take considerable time to resolve ongoing issues with creditors and other third parties whose interests may differ from Nortel’s; generate cash from operations and maintain adequate cash on hand in each of its jurisdictions to fund operations within the jurisdiction during the Creditor Protection Proceedings; obtain any further required approvals from the Canadian Monitor, the U.K. Administrators, the U.S. Principal Officer, the U.S. Creditors’ Committee, or other third parties; raise capital to satisfy claims, including Nortel’s ability to sell assets to satisfy claims against Nortel; realize full or fair value for any assets or business that are divested; utilize net operating loss carryforwards and certain other tax attributes in the future; avoid the substantive consolidation of NNI’s assets and liabilities with those of one or more other U.S. Debtors; operate effectively, and in consultation with the Canadian Monitor, and the U.S. Creditors’ Committee and work effectively with the U.K. Administrators, French Administrator and Israeli Administrators in their respective administration of the EMEA businesses subject to the Creditor Protection Proceedings; continue as a going concern; actively and adequately communicate on and respond to events, media and rumors associated with the Creditor Protection Proceedings; retain and incentivize key employees as may be needed; retain, or if necessary, replace major suppliers on acceptable terms and avoid disruptions in Nortel’s supply chain regarding our remaining stranded contracts; obtain court orders or approvals with respect to motions filed from time

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to time; resolve claims made against Nortel in connection with the Creditor Protection Proceedings for amounts not exceeding Nortel’s recorded liabilities subject to compromise; prevent third parties from obtaining court orders or approvals that are contrary to Nortel’s interests; and (b) risks and uncertainties associated with: limitations on actions against any Debtor during the Creditor Protection Proceedings; the values, if any, that will be prescribed pursuant to any court approved plan to outstanding Nortel securities and, in particular, that Nortel does not expect that any value will be prescribed to the NNC common shares or the NNL preferred shares in any such plan; the delisting of NNC common shares from the NYSE; and the delisting of NNC common shares and NNL preferred shares from the TSX; and (ii) risks and uncertainties relating to Nortel’s business including fluctuations in foreign currency exchange rates; the sufficiency of workforce and cost reduction initiatives; any adverse legal judgments, fines, penalties or settlements related to any significant pending or future litigation actions; failure to maintain integrity of Nortel’s information systems;; and Nortel’s potential inability to maintain an effective risk management strategy.

For additional information with respect to certain of these and other factors, see Nortel’s Annual Report on Form 10-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.

*Nortel, the Nortel logo and the Globemark are trademarks of Nortel Networks.