PRSFE Portal Software (MM)

Portal Software, Inc. (Nasdaq:PRSFE) -0- *T WHAT: Portal Software, Inc. will be a featured participant at the SIP Summit 2005 Conference where Portal's Brian McCann will join a panel focused on SIP support systems. SIP (Session Initiation Protocol) is a high-speed protocol used for Internet telephony. The panel will examine how support system innovation is delivering improved productivity and better customer care, including topics such as how customers can get immediate satisfaction from IP communications services and whether the convergence of network services has caused congestion in the configuration of new applications. WHO: Brian McCann, Portal's director of product marketing and a frequently featured speaker at telecommunications events. WHERE: SIP Summit, Chicago, IL (being held in conjunction with Supercomm) WHEN: June 6-8, 2005. The SIP Support Systems panel is being held from 10:30-11:45 a.m. on Wednesday, June 8. *T Additional information about the conference can be found at: http://www.pulver.com/sipsummit05/. About Portal Software, Inc. Portal is the leading worldwide provider of billing and Revenue Management solutions for the global communications and media markets. The company delivers the only platform for the end-to-end management of customer revenue across offerings, channels, and geographies. Portal's solutions enable companies to dramatically accelerate the launch of innovative, profit-rich services while significantly reducing the costs associated with legacy billing systems. Portal is the Revenue Management partner of choice to the world's leading service providers, including Vodafone, AOL Time Warner, Deutsche Telekom, Telstra, NTT, China Telecom, Reuters, China Mobile, Telenor Mobil, and France Telecom. (C) 1996-2005. PORTAL and the PORTAL LOGO are trademarks or registered trademarks in the United States and in other countries, all owned by Portal Software, Inc. or its subsidiaries.