Nortel
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Nortel
Centennial Communications
NASDAQ : CYCL

October 18, 2005 09:00 ET

Centennial Deploying VoIP Technology in Puerto Rico and Dominican Republic with Nortel Solutions; VoIP Technology to Drive Network Efficiencies and Services

SAN JUAN, Puerto Rico--(CCNMatthews - Oct 18, 2005) -

Centennial Communications (Nasdaq:CYCL), a leading Caribbean service provider, is deploying Nortel (NYSE:NT) (TSX:NT) VoIP technology in Puerto Rico and the Dominican Republic to deliver advanced communication services for enterprises.

Centennial is converging multiple voice and data networks in these countries into a single IP infrastructure supporting affordable advanced services such as VoIP and multimedia collaboration.

"Our enterprise customers depend on Centennial to deliver sophisticated communications services that make it possible to drive higher levels of business efficiency and productivity," said Thomas R. Cogar, Centennial's chief technology officer in the Caribbean. "We chose Nortel for our network upgrade because of its solid track record in implementing VoIP technologies that meet today's needs while providing a flexible foundation for quickly expanding to meet future customer demand."

"Nortel is working closely with Centennial to ensure its converged IP network drives new revenues by providing advanced services that enhance the communication experience of their customers," said Manuel Terrero, vice president, Carrier Packet Networks for Nortel in the Caribbean and Latin America. "Nortel has been helping service providers build advanced communication networks in the Caribbean for over 35 years and we continue that legacy with our current collaboration with Centennial."

Centennial will deploy Nortel's Communication Server (CS) 2000-Compact to deliver the full suite of voice services to business and residential customers, including voice mail and long distance calling. The deployment also includes Nortel's Media Gateway 15000, designed to help switch voice calls more cost-effectively with the public phone network.

Nortel ranked number one in the global markets for service provider softswitches and gateways for the first half of 2005 and the entire year of 2004, according to Synergy Research Group. Nortel is providing VoIP and multimedia solutions to many of the world's leading service providers, including Bell Canada, Charter Communications, Cox Communications, OneConnect, Rogers Communications, SaskTel, and VIVO in Brazil.

About Centennial

Centennial Communications, based in Wall, N.J., is a leading provider of regional wireless and integrated communications services in the United States and the Caribbean with over 1.3 million wireless subscribers and 320,000 access line equivalents. The U.S. business owns and operates wireless networks in the Midwest and Southeast covering parts of six states. Centennial's Caribbean business owns and operates wireless networks in Puerto Rico, the Dominican Republic and the U.S. Virgin Islands and provides facilities-based integrated voice, data and Internet solutions. Welsh, Carson Anderson & Stowe and an affiliate of the Blackstone Group are controlling shareholders of Centennial. For more information regarding Centennial, please visit our websites www.centennialwireless.com, www.centennialpr.com, and www.centennialrd.com.

About Nortel

Nortel is a recognized leader in delivering communications capabilities that enhance the human experience, ignite and power global commerce, and secure and protect the world's most critical information. Serving both service provider and enterprise customers, Nortel delivers innovative technology solutions encompassing end-to-end broadband, Voice over IP, multimedia services and applications, and wireless broadband designed to help people solve the world's greatest challenges. Nortel does business in more than 150 countries. For more information, visit Nortel on the Web at www.nortel.com. For the latest Nortel news, visit www.nortel.com/news.

Certain information included in this press release is forward-looking and is subject to important risks and uncertainties. The results or events predicted in these statements may differ materially from actual results or events.

Factors which could cause results or events to differ from current expectations include, among other things: the outcome of regulatory and criminal investigations and civil litigation actions related to Nortel's restatements and the impact any resulting legal judgments, settlements, penalties and expenses could have on Nortel's results of operations, financial condition and liquidity, and any related potential dilution of Nortel's common shares; the findings of Nortel's independent review and implementation of recommended remedial measures; the outcome of the independent review with respect to revenues for specific identified transactions, which review will have a particular emphasis on the underlying conduct that led to the initial recognition of these revenues; the restatement or revisions of Nortel's previously announced or filed financial results and resulting negative publicity; the existence of material weaknesses in Nortel's internal control over financial reporting and the conclusion of Nortel's management and independent auditor that Nortel's internal control over financial reporting is ineffective, which could continue to impact Nortel's ability to report its results of operations and financial condition accurately and in a timely manner; the impact of Nortel's and NNL's failure to timely file their financial statements and related periodic reports, including Nortel's inability to access its shelf registration statement filed with the United States Securities and Exchange Commission (SEC); ongoing SEC reviews, which may result in changes to Nortel's and NNL's public filings; the impact of management changes, including the termination for cause of Nortel's former CEO, CFO and Controller in April 2004; the sufficiency of Nortel's restructuring activities, including the work plan announced on August 19, 2004 as updated on September 30, 2004 and December 14, 2004, including the potential for higher actual costs to be incurred in connection with restructuring actions compared to the estimated costs of such actions;

cautious or reduced spending by Nortel's customers; increased consolidation among Nortel's customers and the loss of customers in certain markets; fluctuations in Nortel's operating results and general industry, economic and market conditions and growth rates; fluctuations in Nortel's cash flow, level of outstanding debt and current debt ratings; Nortel's monitoring of the capital markets for opportunities to improve its capital structure and financial flexibility; Nortel's ability to recruit and retain qualified employees; the use of cash collateral to support Nortel's normal course business activities; the dependence on Nortel's subsidiaries for funding; the impact of Nortel's defined benefit plans and deferred tax assets on results of operations and Nortel's cash flow; the adverse resolution of class actions, litigation in the ordinary course of business, intellectual property disputes and similar matters; Nortel's dependence on new product development and its ability to predict market demand for particular products; Nortel's ability to integrate the operations and technologies of acquired businesses in an effective manner; the impact of rapid technological and market change; the impact of price and product competition; barriers to international growth and global economic conditions, particularly in emerging markets and including interest rate and currency exchange rate fluctuations; the impact of rationalization and consolidation in the telecommunications industry; changes in regulation of the Internet; the impact of the credit risks of Nortel's customers and the impact of customer financing and commitments; general stock market volatility; negative developments associated with Nortel's supply contracts and contract manufacturing agreements, including as a result of using a sole supplier for a key component of certain optical networks solutions; the impact of Nortel's supply and outsourcing contracts that contain delivery and installation provisions, which, if not met, could result in the payment of substantial penalties or liquidated damages; any undetected product defects, errors or failures; and the future success of Nortel's strategic alliances.

For additional information with respect to certain of these and other factors, see the most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q filed by Nortel 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.

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