CAIS Internet Joins Intel Internet Service Provider Program.

WASHINGTON, DC--(BUSINESS WIRE)--Sept. 14, 1999--

Designation Identifies Participation in Intel's ISP Program and

Source for Internet-Tailored Equipment, Services and Technologies

CAIS Internet today announced its participation in the Intel(R) Internet Service Provider Program, a worldwide ISP-focused channel initiative that will provide small and medium-sized businesses and consumers with a source for Internet-tailored equipment, services and technologies. Intel will provide Intel ISP Program participants with the opportunity to become trained on Intel architecture and networking-based Internet equipment.

"We are proud to be a member of the Intel Internet Service Provider Program," said Ulysses G. Auger II, CEO, CAIS Internet. "The shared philosophies between CAIS and Intel to be a full service high speed Internet solution makes our membership ideal, and exposes our customers to cost-effective solutions that will increase our competitiveness in ever-changing markets."

Begun in July 1999, the program is a response to the evolution of ISPs from their traditional role of facilitating Internet access to becoming one-stop-shopping sources for many new Internet-related applications, products, and services. The Intel networking products offered through the program are designed for ease of integration as well as scalability. The high-performing server solutions have special form factors to address companies' growing server needs, and are designed to maximize "up time," which is vital to e-commerce offerings. Intel believes in an equipment "building block" approach, allowing maximum flexibility for customers.

For more information about the Intel Internet Service Provider program, go to www.intel.com/isp Interested ISPs, ASPs and VARs may register for the Intel ISP newsletter at this Web site. Registrants who fulfill program and profile requirements can qualify to become program participants.

Intel, the world's largest chipmaker, is also a leading manufacturer of computer, networking and communications products. Additional information about Intel is available at www.intel.com/pressroom

About CAIS Internet

CAIS Internet, Inc. (Nasdaq: CAIS) is a leading broadband Internet service provider, delivering the latest in end-to-end high speed Internet access solutions. CAIS provides customers with Internet connections while traveling in hotels, cruise ships, airports, and other public areas and at work, in SOHOs, single-family homes and apartment buildings. The company's software subsidiary, CAIS Software Solutions, and its business center subsidiary, Business Anywhere(TM), bring broadband connectivity to markets for Internet access that did not previously exist.

The CAIS total high speed Internet access solution delivers high speed Internet access systems to hospitality, public areas and multi-family environments with Business Anywhere self-operated business centers, patented multi-point distribution OverVoice technology, IPORT server software solutions, public area kiosks, and interactive content, among others. CAIS also delivers point-to-point high speed Internet access using HyperDSL lines to commercial and residential customers, as well as full-range of T1, T3 and other dedicated Internet access to consumers, businesses and other downstream Internet providers. All CAIS Internet services are delivered with expert 24/7 technical and customer support.

CAIS Software Solutions products and services are installed in airports, hotels, convention centers, and other public areas. Customers include US West, GTE, TCG, Pacific Bell, Mail Boxes Etc. and Canada Payphone. With the IPORT Internet Access system, the company has received honors including the 1997 and 1998 Microsoft Retail Application Developer "RAD" award and the UCSD Connect 1998 Most Innovative Product Award.

CAIS Internet operates a nationwide, clear-channel Internet and ATM Network. CAIS currently peers with public and private partners, and at national exchange points MAE East, MAE East ATM, MAE West, and AADS.

Information on CAIS is available by calling 888-260-CAIS, or by visiting the company's web site at www.cais.com

EDITOR'S NOTE:

-- OverVoice and CAIS are registered trademarks of CAIS Internet. -- Other brands or products are trademarks or registered trademarks of

their respective holders.

This release contains statements relating to CAIS's future expectations and business strategies or other "forward-looking" information. Those statements are subject to known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from those contemplated by the statements. Important factors that may cause actual results to differ from projections include, among others: changes in business conditions; changes in the Internet services industry and the general economy; our limited operating history; our ability to manage rapid growth; our ability to enter into joint ventures and other strategic relationships with companies on terms acceptable to us; and the impact of computer and related problems that may arise from the Year 2000 problem on our business.