Portal Software Readies Telstra OnAir for Wireless Data Services; Australia's Largest Mobile Operator Standardizes on the Infranet Customer Management and Billing Platform

Business Wire, July 11, 2001

Business Editors/High-Tech Writers

CUPERTINO, Calif.--(BUSINESS WIRE)--July 11, 2001

Portal Software, Inc. (Nasdaq:PRSF), a leading provider of business infrastructure software for next-generation communications services, today announced that Telstra OnAir, Australia's largest mobile telecommunications provider, has selected Infranet(R), Portal's customer management and billing platform. Telstra OnAir will deploy Infranet nationwide to help meet the future demand of its mobile customers for accessing wireless data products and services.

"We realized that we needed a flexible and responsive data charging platform if we were going to meet our customers' demands for value-added services," said Ashley Lazaro, General Manager of IT at Telstra OnAir. "We chose the Infranet platform because it provides the capability to support a wide range of products and pricing options, targeted specifically at the mobile data market."

"With this solution, Telstra OnAir will be able to develop a wide range of product offerings to suit its customers' unique interests and needs and this is a first step toward supporting charging and billing for our future wireless data products and services."

Telstra OnAir is taking a phased approach to implementing Infranet. In the first phase it will deploy the solution and integrate it into its network and systems environment, supporting GPRS packet data services. Phase one of the implementation is due for completion by September 2001.

"Telstra OnAir is an innovative service provider that is always endeavoring to break new ground," said Robert Lau, vice president of Portal Software (Asia Pacific) Limited. "In focusing on the delivery of next-generation, 3G mobile services the company recognized the need for a real-time customer management and billing solution that can be easily integrated into its existing networks and systems environments. Infranet's power, flexibility and scalability will enable Telstra OnAir to provide customers with new value-added services and innovative pricing plans."

About Telstra

Telstra is Australia' largest leading telecommunications and information services company. Telstra offers a full range of services including: National and International Standard Telephony and Services, Broadband, ADSL and Cable, Wireless GSM and CDMA, Data Services, ATM, Frame Relay, VPN, ISP, ASP, Web hosting, Satellite Services, Pay TV, Facilities Management, Directories, Customer Premises Equipment & Wholesale - and subsequently compete in all telecommunications markets throughout Australia.

Telstra OnAir is the largest mobile telecommunications provider in Australia with GSM and CDMA digital networks, covering 95 per cent and 97 per cent of the population respectively. More information can be found at www.telstra.com.au

About Portal Software, Inc.

Portal Software provides software to manage next-generation communications and e-services. The Infranet software platform enables service providers to rapidly deploy new services, define optimal business models and price plans, and bill their users. Portal's software is licensed by more than three-quarters of the world's 25 largest communications services companies to support wireless, broadband, Internet, next-generation voice, and other e-service offerings. Customers include AOL Time Warner, Qwest Communications, Sprint, NTT, Deutsche Telekom, Telenor Mobil AS, China Telecom, and France Telecom. For more information, visit www.portal.com.

Note to Editors: 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.