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Primus Approved to Begin Trading on NYSE

MCLEAN, VA--(Marketwire - 06/20/11) - Primus Telecommunications Group, Incorporated (PTGi) (OTC.BB:PMUG - News) (NYSE:PTGI - News), a global facilities-based integrated provider of advanced telecommunications products and services, announced today that it has been authorized to list its common stock on the New York Stock Exchange (NYSE) under the ticker symbol "PTGI." The Company anticipates shares of its common stock will begin trading on the NYSE at the market's open on June 23, 2011. Until that time, PTGi common stock will continue to trade on the OTC Bulletin Board.Peter D. Aquino, Chairman, President and Chief Executive Officer, stated, "We at PTGi are excited to list on the NYSE, an important next step in the Company's evolution that should offer our stockholders greater trading liquidity and raise the visibility of the Company. We are strategically investing in the value of the PTGi portfolio and making important strides in improving our profitability and cash flow and transforming our balance sheet. The New York Stock Exchange listing affirms our strategy and our intention to deliver improved returns to stockholders."About Primus
Primus Telecommunications Group, Incorporated is a leading provider of advanced communication solutions, including traditional and IP voice, data, mobile services, broadband Internet, collocation, hosting, and outsourced managed services to business and residential customers in the United States, Canada, Australia, and Brazil. Primus is also one of the leading international wholesale service providers to fixed and mobile network operators worldwide. Primus owns and operates its own global network of next-generation IP soft switches, media gateways, hosted IP/SIP platforms, broadband infrastructure, fiber capacity, and data centers located in Canada, Australia, and Brazil. Founded in 1994, Primus is headquartered in McLean, Virginia.Forward-Looking Statements
This press release includes "forward-looking statements" as defined by the Securities and Exchange Commission (SEC). All statements, other than statements of historical fact, included herein that address activities, events or developments that Primus expects, believes or anticipates will or may occur in the future, including comments regarding a national stock exchange listing and future growth of the Company, are forward-looking statements. These forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially including, among other things, those outlined in our filings with the SEC, including Primus's most recent Annual Report on Form 10-K, as amended, and Quarterly Report on Form 10-Q, on file with the SEC. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of their dates. Except as required by law, Primus does not intend to update or revise its statements made in this press release, whether as a result of new information, future events or otherwise.