REMINDER/Portal, TeleStrategies, HP, Intel and Microsoft to Host Webinar: Winning Strategies for Wireless Content; April 30, 2004.

Business Editors/High-Tech Writers

REMINDER...for Friday (April 30)

--(BUSINESS WIRE)

Portal Software, Inc. (Nasdaq:PRSF)

WHAT:           Portal Software, Inc., Hewlett-Packard, Intel
                Corporation and Microsoft Corporation are partnering
                with TeleStrategies, the leading producer of
                telecommunications industry conferences, seminars,
                tutorials and trade shows, to host a webinar designed
                to provide telecommunications carriers with industry
                leading perspectives regarding content settlement
                solutions for the wireless market.

                By 2006, the Yankee Group estimates 50 million
                wireless phone users in the United States will use
                their devices to authorize payment for premium content
                and physical goods. What are the 2004 business
                opportunities for telecommunications service providers
                with content settlement? The need for settlement
                solutions is driven by an increasingly complex
                partnering environment. The settlement process can
                help drive partner revenue and enable the successful
                of management of a complex issue with flexible,
                value-based pricing programs that contribute directly
                to the bottom line.

                Portal Software, Inc. (Nasdaq:PRSF) provides flexible
                billing and subscriber management solutions to enable
                organizations to monetize their voice and digital
                transactions. Portal's convergent billing platform
                enables service providers to charge, bill, and manage
                a wide range of services via multiple networks,
                payment models, pricing plans, and value chains.
                Portal's flexible and scalable product-based solutions
                enable customers to introduce new value added services
                quickly, providing maximum business value and lower
                total cost of ownership. Portal's customers include
                thirty-five of the top fifty wireless carriers as well
                as organizations such as Vodafone, AOL Time Warner,
                Deutsche Telekom, TELUS, NTT, China Telecom, Reuters,
                Telstra, China Mobile, Telenor Mobil, and France
                Telecom. For more information, please visit
                www.portal.com.

WHEN:           Friday, April 30 at 11:00 a.m. EDT

REGISTRATION:
http://www.serviceprovidersclub.com/main/event-detail.cfm?eventId=58

Registration is limited to telecommunications service providers.