PACW PacWest Bancorp

STOCKTON, Calif., June 8 /PRNewswire-FirstCall/ -- Pac-West Telecomm, Inc. (NASDAQ:PACW), a leading provider of traditional and next-generation voice communications services, today announced that Intrado, a global provider of integrated data and telecommunications solutions and a leading provider of VoIP 9-1-1 services, will utilize Pac-West's 911 Selective Router network trunking to facilitate the delivery of VoIP E911 calls. Hank Carabelli, Pac-West's President and Chief Executive Officer, commented, "Pac-West is executing on a planned national expansion of its infrastructure platform that bridges traditional circuit-switched and next-generation IP-based services. We are pleased that Intrado has chosen to utilize our platform to serve the needs of the growing VoIP community." The initial phase of Pac-West's planned nationwide expansion will allow service providers to provide communications services to an addressable market of more than 150 million end-users across an additional 36 major metropolitan markets in the second-half of 2006. This infrastructure is anticipated to serve the needs of VoIP Providers, Wireless Broadband Providers, Internet Service Providers (ISPs), Carriers and other Next-Generation Service Providers. "Our relationship with Pac-West enables Intrado to extend the nationwide deployment of our V9-1-1(R) Service -- a public safety class VoIP E9-1-1 solution that provides carriers and enterprises comprehensive data management, call routing and delivery for E9-1-1," said Stephen Meer, Intrado cofounder and chief technology officer. "We look forward to working with Pac-West as we build out a robust and secure network for VoIP service providers on a national level." 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, Oregon, Idaho, Washington D.C., Colorado, Pennsylvania, Florida and Maryland. 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, 2005, as filed with the SEC on March 29, 2006, 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 SmallCap Market; 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, +1-209-926-4371, or , or investors, Reid Cox, +1-209-926-3417, or , both of Pac-West Web site: http://www.pacwest.com/

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