Mark Remissong Named Chief Operating Officer of Efficient Networks, Inc.

DALLAS--(BUSINESS WIRE)--Sept. 13, 1999--

Efficient Networks, Inc., (NASDAQ:EFNT) today announced that Mark Remissong has been named to the newly-formed post of Chief Operating Officer.

Reporting to Mark Floyd, Efficient Networks President and CEO, Remissong will be responsible for the management of all business operations worldwide.

"Remissong's addition significantly strengthens the management team," said Floyd. "With his broad-based expertise and years of successful experience with large, publicly-held corporations and professional skills, Mark Remissong will help us lay the organizational foundation necessary to begin our aggressive strategy for growth."

Prior to joining Efficient Networks, Remissong was Vice President and Chief Financial Officer of U.S. Robotics Corporation, where his accomplishments included making a significant contribution to the development of that company's business worldwide. Remissong played a vital role in building the infrastructure that enabled the company to scale its operational capabilities and information systems as the company grew from $378 million to nearly $3.5 billion. He was also a key member of the team that successfully completed six mergers and acquisitions, including the company's merger with 3Com Corporation.

Previously, Remissong was Senior Vice President and Chief Financial Officer of Collins and Aikman Corporation, where he was responsible for that company's July 1994 Initial Public Offering. Prior to that, he was Vice President, Finance, of Burlington Industries, Inc. He began his career at the public accounting firm of Ernst & Young, where he was a partner in the technology practice.

Remissong, 46, holds an M.B.A. from the University of Chicago and a B.S.S. from Cornell College, Mt. Vernon, Iowa. He is a certified public accountant.

About Efficient Networks

Efficient Networks, Inc. is an independent supplier of DSL data access products for the customer premises. The company furnishes service providers and small to mid-sized businesses with its SpeedStream DSL CPE product line, which includes a suite of DSL routers and modems all designed for simple, rapid installation and seamless compatibility. As a recognized worldwide leader in the ATM/DSL market, Efficient Networks is a member of the ATM Forum and the ADSL Forum. With headquarters in Dallas, Texas, Efficient Networks has sales and support offices throughout the United States, and in Amsterdam and Singapore. For more information, see Efficient's World Wide Web home page at www.efficient.com.

This press release contains forward looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended. Such forward looking statements include statements concerning product availability and market acceptance. Important factors that may cause actual results to differ include: risks associated with the Digital Subscriber Line Industry and risks that may affect our ability to execute our business plans. For a further discussion of the risks facing our business, please refer to the documents filed by Efficient Networks, Inc. with the United States Securities and Exchange Commission from time to time.