CHARLOTTE, N.C., Jun 28, 2004 /PRNewswire-FirstCall via COMTEX/ -- US LEC Corp. (CLEC), a super-regional telecommunications carrier providing integrated voice, data and Internet services to businesses and enterprise organizations throughout the Eastern United States, continues to grow its data product suite with the introduction of Burstable Dedicated Internet and Multi- Link FAST Pipe, two new products designed to meet the rapidly-changing communications requirements of mid-to-large sized businesses.

Customers with occasional high capacity DS3 and OC3 needs can now take advantage of US LEC's new Burstable Dedicated Internet product. This service provides significant flexibility by accommodating a customer's Internet bandwidth needs at peak times when Internet traffic "bursts," while only requiring the purchase of a smaller, committed bandwidth amount for normal Internet usage. US LEC bills customers for any traffic "bursts" at the 95th percentile, and will even make the customer aware of any unusually heavy traffic patterns.

Multi-Link FAST Pipe(SM) applies the same technology to Internet service that is utilized by Multi-Link Frame Relay, which US LEC announced last year. By incrementally linking multiple DS1 lines, customers eliminate the need to purchase larger costly DS3 facilities to increase capacity. By allowing Internet traffic to travel over multiple facilities as though they were a single line, information can be transported more quickly and inexpensively. In addition to the convenience of growing their network step by step without large increases in cost, customers benefit from improved network survivability and reliability as the temporary failure of one DS1 line will not affect the others in the bundle.

"Burstable Dedicated Internet and Multi-Link FAST Pipe are two of the latest products in US LEC's roll-out of flexible services which allow customers to access incremental bandwidth as they need it to meet their own requirements," said Jeff Blackey, senior vice president of marketing and business development for US LEC. "Customers can now purchase higher speeds and greater bandwidth at more affordable rates. It's another example of how US LEC is customizing products to meet and exceed our customers' expectations for quality, and another reason US LEC continues to be the premier communications choice for businesses."

About US LEC

Based in Charlotte, NC, US LEC is a leading telecommunications carrier providing integrated voice, data and Internet services to medium and large businesses and enterprise organizations throughout 15 Eastern states and the District of Columbia. US LEC services include local and long distance calling services, Voice over Internet Protocol (VoIP) service, advanced data services such as Frame Relay, Multi-Link Frame Relay and ATM, dedicated and dial-up Internet services, managed data solutions, data center services and Web hosting. US LEC also provides selected voice services in 25 additional states and selected data services nationwide. For more information about US LEC, visit http://www.uslec.com .

Except for the historical information contained herein, this report contains forward-looking statements, subject to uncertainties and risks, including the demand for US LEC's services, the ability of the Company to introduce additional products, the ability of the Company to successfully attract and retain personnel, competition in existing and potential additional markets, uncertainties regarding its dealings with ILECs and other telecommunications carriers and facilities providers, regulatory uncertainties, the possibility of adverse decisions related to reciprocal compensation and access charges owing to the Company, as well as the Company's ability to begin operations in additional markets. These and other applicable risks are summarized in the "Forward-Looking Statements and Risk Factors" section and elsewhere in the Company's Annual Report on Form 10-K for the period ended December 31, 2002, and in subsequent reports, which are on file with the Securities and Exchange Commission.

US LEC is a registered service mark of US LEC Corp. US LEC and Design (R) is a registered service mark and trademark of US LEC Corp.

CONTACT: Media, Jennifer Sharpe, +1-704-319-1135, or jsharpe@uslec.com, or Investors, James Stawski, +1-704-319-1189, or jstawski@uslec.com, both of US LEC Corp.

SOURCE US LEC Corp.

Media, Jennifer Sharpe, +1-704-319-1135, or jsharpe@uslec.com,
or Investors, James Stawski, +1-704-319-1189, or jstawski@uslec.com, both of
US LEC Corp.

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