PACW PacWest Bancorp

STOCKTON, Calif., March 10 /PRNewswire-FirstCall/ -- At the Spring 2006 VON Conference & Expo Communications Policy Summit, John Sumpter, vice president of Regulatory at Pac-West Telecomm Inc. (NASDAQ:PACW), will participate in a panel that will discuss ecommerce, network policy and the importance of preserving the open and interconnected nature of the Internet. WHERE: Spring 2006 VON Conference & Expo San Jose Convention Center San Jose, CA WHEN: Tuesday, March 14, 2006 1 p.m. - 1:45 p.m. WHO: John Sumpter, Vice President, Pac-West Mr. Sumpter has over 30 years of experience in the telecommunications industry. Prior to joining Pac-West, he held several executive level regulatory and marketing positions at AT&T. He currently serves as Chairman of the Board of the California Association of Competitive Telecommunications Companies (CALTEL) and the California Alliance for Consumer Education (CACE) and as a Board Member for COMPTEL. WHAT: Communications Policy Summit Panel Discussion "The Imposition of Regulation on e-Commerce, the Internet and Affected Businesses" How is business affected by ever-evolving and changing legislation, regulation, policy and technology? What Lessons might E-Commerce and other businesses reliant on changing communications technology and policy learn from the pioneering efforts and experiences of VoIP and telecom providers? How might such concepts as open source, Moore's Law, and Metcalf's Law, and the ability to deliver voice, video and other media via the Internet further effect business and policy? Mr. Sumpter will be available to meet with press and industry analysts during the Spring 2006 VON Conference & Expo. Pac-West also is exhibiting in booth 1639. About Pac-West Telecomm, Inc. Pac-West is a provider of advanced communications services that enable traditional and next-generation providers, carriers, and service providers to efficiently design, deploy, and deliver integrated communication solutions. Currently, Pac-West has operations in California, Nevada, Washington, Arizona, Utah, and Oregon. Founded in 1980, Pac-West Telecomm, Inc. has been offering communication services to its customers since 1982 and has been a leading provider of wholesale services to Internet Service Providers. For more information, visit http://www.pacwest.com/. Forward-Looking Statements In this press release, our use of the words "outlook," "expect," "anticipate," "estimate," "forecast," "project," "likely," "objective," "plan," "designed," "goal," "target," and similar expressions is intended to identify forward-looking statements. While these statements represent our current judgment on what the future may hold, and we believe these judgments are reasonable, actual results may differ materially due to numerous important risk factors that are described in our Annual Report on Form 10-K for the period ended December 31, 2004, as filed with the SEC on March 30, 2005, which may be revised or supplemented in subsequent reports filed by us with the SEC. Such risk factors include, but are not limited to: our level of indebtedness; an inability to generate sufficient cash to service our indebtedness; regulatory and legal uncertainty with respect to intercarrier compensation payments received by us; the migration to broadband Internet access affecting dial-up Internet access; the loss of key executive officers could negatively impact our business prospects; an increase in our network expenses; migration of our enterprise customer base to U.S. TelePacific Corp. occurring sooner or later than contemplated; the possible delisting of our common shares from the Nasdaq Capital Markets; and our principal competitors for local services and potential additional competitors have advantages that may adversely affect our ability to compete with them. DATASOURCE: Pac-West Telecomm, Inc. CONTACT: media, John Amaya, +1-209-926-4195, or , or investors, Reid Cox, +1-209-926-3417, or , both of Pac-West Web site: http://www.pacwest.com/

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