Avaya Leads U.S. Enterprise Telephony Market for the First Quarter of 2006

June 09, 2006

Avaya leads for third consecutive quarter according to InfoTech

BASKING RIDGE, N.J. – Avaya Inc., (NYSE:AV) has been named the leader in U.S. Enterprise Telephony for the first quarter of 2006 according to InfoTech’s InfoTrack for Enterprise Communications, First Quarter 2006 Report. Avaya captured 19.8 percent of the U.S. Enterprise Telephony market in the first quarter, giving the company a four point lead over the nearest competitor. This is third consecutive quarter Avaya has been named the leader in this measure.

The report is based on analysis of telephony line shipment data provided by participating vendors and is a comprehensive measurement of overall performance in the total U.S. market, including both Internet Protocol (IP) telephony and traditional telephony. Avaya is a leading global provider of business communications applications, systems and services.

Strong results in U.S. IP Telephony, with 20.1 percent of the market, reinforced Avaya’s overall U.S. Enterprise Telephony position. As Avaya reported in its fiscal quarter ended December 31, 2005, sales of IP telephony products in the U.S. rose 21 percent over the year ago quarter. The company has also shipped its nine millionth IP telephony line worldwide.

“Once again, Avaya leads the growth of IP telephony in the U.S.,” said Susan Hobart, vice president and senior program director, InfoTech. “Results in both IP and traditional telephony line shipments bolstered Avaya’s performance in the InfoTrack analysis, and the company’s position reflects the appeal of its solutions in a competitive, expanding business communications market.”

“Avaya’s commitment to providing high value, intelligent communications for our customers is proving to be a force in our ongoing leadership through the first quarter in U.S. enterprise telephony,” said Michael C. Thurk, Avaya senior vice president and president, Global Communications Solutions. “Avaya continues to work closely with our customers to provide solutions tailored to individual business needs.”

Forward Looking Statements
Certain statements contained in this release may be considered forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements may involve risks and uncertainties that could cause actual outcomes and results to differ materially. For a list and description of such risks and uncertainties, see the reports filed by Avaya with the SEC, which are available at www.sec.gov, particularly the information contained in Part I, Item 1, entitled “Forward Looking Statements,” of our fiscal 2005 Form 10-K and the information contained in Part I, Item 2, entitled “Forward Looking Statements,” of our Form 10-Q for the fiscal quarter ended December 31, 2005. Avaya disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

About Avaya
Avaya Inc. designs, builds and manages communications networks for more than one million businesses worldwide, including 90 percent of the FORTUNE 500®. Focused on businesses large to small, Avaya is a world leader in secure and reliable Internet Protocol (IP) telephony systems and communications software applications and services.

Driving the convergence of voice and data communications with business applications – and distinguished by comprehensive worldwide services – Avaya helps customers leverage existing and new networks to achieve superior business results. For more information visit the Avaya website: http://www.avaya.com.

Contact Information

Deb Kline

Media Relations

Avaya

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