Boingo Leverages Portal Software for Innovative Wireless Broadband Internet Service

Business Wire, April 18, 2002

Business Editors

CUPERTINO, Calif.--(BUSINESS WIRE)--April 18, 2002

Portal's Infranet Platform Delivers Flexible Billing and Tracking

Foundation For Boingo's Ultra-High Speed Wireless LAN Service for

Business Travelers

Portal Software, Inc. (Nasdaq:PRSF) today announced that Boingo Wireless, Inc. has implemented Infranet(R), Portal's market leading billing solution for mobile service providers.

Launched in January, Boingo's nationwide wireless service gives business travelers high-speed Internet access through hundreds of "hot spots" in major airports and hotels around the country. Boingo makes it easy for users to locate and connect to public and private Wi-Fi networks, a common standard for wireless broadband Internet access.

Boingo selected Portal because the company's Infranet software platform provides flexibility and accuracy in the tracking and billing of new services and customer usage -- important components to support Boingo's business model. The flexibility of the Portal solution enables Boingo to rapidly respond to market dynamics by developing and delivering promotional offers based on the latest customer usage patterns and competitive offerings.

"Portal helped us launch Boingo rapidly and offer customers several unique pricing plans -- an important feature in the highly competitive wireless market," said Niels Jonker, vice president, engineering, Boingo Wireless. "Infranet has proved to be a strong platform for reliably managing the complex billing and remittance scenarios inherent to a wireless broadband ISP."

Boingo developed its billing infrastructure with the Infranet solution, which allowed the company to create and support multiple service and pricing models, maximizing appeal of the service at launch. The open API architecture of Infranet simplified integration with the other elements of the Boingo technology environment.

"The architecture of our Infranet platform enables Portal to support a wide range of wireless services, including Boingo's innovative reseller model for Wi-Fi services," said Steve Sommer, senior vice president, marketing and business development, Portal Software. "Boingo is dedicated to simplifying wireless Internet access for consumers everywhere, and we are delighted to provide them with one convergent billing platform to achieve this."

About Infranet

Portal Software's Infranet is a modular, platform-based solution that allows service providers to rapidly develop, price, and provision services while strategically managing customer usage and billing. Infranet offers a scalable, flexible, and highly available architecture, as well as open APIs and integration with industry-leading applications.

About Boingo Wireless

Boingo Wireless, Inc. is an ultra-high-speed wireless Internet service now available in hundreds of locations across the country, such as hotels, airports, cafes, and other public places. Boingo provides business travelers with a wireless broadband Internet connection to improve productivity while on the road. Through its free Wi-Fi software, Boingo makes finding and connecting to Wi-Fi networks point-and-click simple and secure. EarthLink founder and chairman Sky Dayton founded Boingo in 2001 and serves as its CEO. To sign up for Boingo service, or to download Boingo's free Wi-Fi software, visit http://www.boingo.com or call 1-800-U-BOINGO.

About Portal Software, Inc.

Portal Software develops customer management and billing software for communications and content service providers. Portal's real-time, convergent platform enables its customers to rapidly create, deploy, and bill for services with flexible business models. Portal's software is licensed by a majority of the world's largest communications providers to deliver voice, data, video, and content services across wireless, wireline, cable, and satellite networks. Customers include Vodafone, AOL Time Warner, Deutsche Telekom, NTT, WorldCom, China Telecom, Reuters, Telstra, Sprint, China Mobile, Telenor Mobil, and France Telecom.

Infranet is a U.S. registered trademark, and Portal and the Portal logo are trademarks of Portal Software, Inc. All statements made in this press release are made only as of the date set forth at the beginning of this release. Portal undertakes no obligation to update the information in the event facts or circumstances subsequently change.