Portal Software Powering Telverse Communications' VOIP Billing; VOIP Wholesaler Implements Multiple Pricing Plans for Channel Partners

Telverse Communications, a nationwide wholesale provider of "Business Tone" IP communication services, has implemented Portal's convergent billing solution, Infranet(R) to provide flexible billing and pricing plans to its customers for end-to-end IP-based communication services. Telverse is also using Infranet's branding capabilities to create customer-specific VOIP service offerings.

Portal Software, Inc. (Nasdaq:PRSF) today announced that Telverse Communications, a nationwide wholesale provider of "Business Tone" IP communication services, has implemented Portal's convergent billing solution, Infranet(R)

Telverse provides channel partners, telecommunications carriers, and ISP customers with a full suite of customized communications services to sell to their customers. Telverse's wholesale offering gives its customers and partners a quick and cost-effective way to bring new services to market and instantly generate new revenue opportunities. Portal is providing Telverse with the ability to invoice for communications services on behalf of its customers and partners.

"Telverse has realized significant value in working with Portal," said Oliver Davis, vice president of marketing, Telverse Communications. "As an innovative leader in billing for VOIP, Portal has the only proven solution that allowed us to quickly deploy communications services for our customers. Portal's solution supports industry standards, has the flexibility we require to change and add new services on an ongoing basis, and is inexpensive to maintain."

The Portal-based billing solution gives Telverse the flexibility to manage and charge for multiple services provided by multiple companies. Portal provides varied payment models allowing Telverse to easily configure bills for differing service partners and to create pricing plans closely aligned with its customers' different businesses. With Portal's billing solution, Telverse has been able to deploy new services for new channel partners in as little as two months. Portal's built-in scalability also allows Telverse and its customers to grow.

Using Infranet's powerful brand management capabilities, Telverse can easily customize services to fit its customers' specific branding needs and existing service platforms. Infranet enables companies to brand on behalf of other companies and allows Telverse to generate invoices that are branded with its customers' logos.

"As a leader in the managed communication services market, Telverse needed a billing solution that could provide complete support for their IP-based voice and data service provider customers," said Chris Grejtak, senior vice president, marketing, Portal Software. "They needed a cost effective solution that would allow them to be up and operational quickly but also gave them the flexibility and scalability to grow the billing solution as their business grew. The Portal solution, based on our Infranet convergent billing platform, has enabled Telverse to not only meet the changing requirements of their demanding customers but has also allowed them to realize a return on their Infranet investment through new revenues and a predictable and low overall cost of operations."

About Telverse Communications
Telverse Communications offers wholesale IP voice, video and data services for rapid deployment of reliable, scalable and customizable IP communication applications within the U.S. Telverse's Hosted IP-Centrex service is delivered via broadband or traditional networks and is accessible through a wide range of devices. For more information about Telverse, visit www.telverse.com
<http://www.telverse.com>.

About Portal Software, Inc.
Portal Software develops product-based customer management and billing solutions for communications and content service providers. Portal's convergent platform enables service providers to deliver voice, data, video, and content services with multiple networks, payment models, pricing plans, and value chains. Portal's unique approach is designed to provide its customers superior return on innovation with maximum 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, Vivendi, and France Telecom. For more information, please visit www.portal.com <http://www.portal.com>.

Geoff Devlin
PR Manager, EMEA
Portal Software
Tel: +44 1753 244 026
Mob: +44 7734 498263
Email: gdevlin@portal.com