Taiwan's Yuanta Securities Selects TNS to Support Market Growth; TNS' Secure Trading Extranet to Connect Taiwan's Equity Market Leader.

RESTON, Va. -- Transaction Network Services, Inc. (NYSE:TNS), a leading network and data communications provider for transaction-oriented applications today announced that they have been appointed by Yuanta Core Pacific Securities, Taiwan's leading securities broker by market capitalization, to provide its clients with electronic access to its trading systems. TNS' Secure Trading Extranet will give Yuanta's clients fast, secure and reliable access to the broker's extensive network of financial services.

With over eight percent of the market, Yuanta processes the largest share of daily turnover in Taiwan's equity markets. Yuanta stands among the top three futures brokers there and provides access to securities trading, research, investment banking, online trading, mutual funds, fixed income and derivative products.

"We had long been familiar with TNS' systems and capabilities," said William Moomaw, institutional equity sales with Yuanta. "The TNS network will complement the investment we've already made in designing, building and maintaining our own advanced in-house brokerage system that has set the benchmark for this market."

"Clients worldwide are demanding electronic access to this market and to service this demand we require a company with a worldwide presence and a reputation for good service and reliability," continued Moomaw. "A recommendation from one of our customers led us to choose TNS to support our rapid growth plans. We're always looking at ways to develop and improve trading facilities for our clients, and we felt TNS had the perfect combination of innovation, advanced technology and industry expertise to help us do this."

The new deal will allow TNS' customers, who are already on TNS' extranet, to access Yuanta's brokerage network.

"Yuanta has achieved remarkable success since venturing into electronic trading three years ago," said John Pilch, sales director with TNS Asia Pacific. "Using our connectivity for transaction authorization and processing will enable Yuanta to concentrate on growing its business and on building stronger client relationships. We look forward to supporting Yuanta in maintaining its leadership position in the securities industry in Taiwan. Online trading is a much smaller proportion of the total volume in Taiwan, than the US for example, and we believe there is enormous growth potential in this field. We're excited to be helping the Taiwanese online market realize its full potential."

TNS currently has a global presence in 28 countries and provides in-country operations wherever the market requires innovative and proven connectivity. TNS' global activity reflects the increasingly international nature of the transactions market. TNS' Secure Trading Extranet boasts more than 100 points of presence connecting over 1,000 financial community end-points and representing more than 450 financial market institutions worldwide.

About Transaction Network Services, Inc.

Transaction Network Services is one of the leading providers of business-critical, cost-effective data communications services for transaction-oriented applications. TNS provides rapid, reliable and secure transaction delivery platforms to enable transaction authorization and processing across several vertical markets and trading communities.

Since its inception in 1990, TNS has designed and implemented multiple data networks, each designed specifically for the transport of transaction-oriented data. TNS networks support a variety of widely accepted communications protocols and are designed to be scalable and accessible by multiple methods. TNS network technologies have been deployed in the United States and internationally, and TNS networks have become preferred networks servicing the trading community, wireless and wireline carriers, and the card processing and dial-up automated teller machine markets. For further information about TNS transaction solutions, please refer to www.tnsi.com.

The statements and information contained in this press release that are not descriptions of historical fact may contain forward-looking statements. Forward-looking statements involve a number of risks, uncertainties or other factors beyond TNS' control, which could cause actual results to differ materially from historical results or performance and from any opinions or statements expressed with respect to future periods. TNS disclaims any obligation to update or correct any forward-looking statements made herein due to the occurrence of events after the issuance of this press release.