MOUNTAIN VIEW, Calif. – May 16, 2005.LignUp Corporation, a provider of Web services-based converged communications solutions, today announced the addition of three industry veterans to its board of directors: Thomas L. Cronan, III, senior vice president of finance and administration and chief financial officer, Redback Networks, Inc.; Nick Efstratis, partner, Wasatch Venture Fund; Scott Petty, managing director, vSpring Capital. The expanded LignUp board represents a powerful and unique blend of experience from service providers, enterprise software vendors and venture capitalists with expertise in growing companies into market leaders.

LignUp Corporation delivers a powerful Web services-based voice-over-IP (VoIP) communications platform and suite of applications, which enable service providers to compete with a steady stream of innovative services via converged voice-data solutions. In joining the LignUp board, Mr. Cronan, Mr. Efstratis, and Mr. Petty will play active roles in building on the company’s success – with more than 100 customers to date – to drive LignUp’s expansion of operations and market penetration in the US, Europe and Asia-Pacific.

“These outstanding leaders complement our management team with dynamic business acumen, industry experience and management wisdom,” said Hector Saldana, founder, chairman and CEO at LignUp Corporation. “We look forward to working with these new members of the LignUp team to build on our business momentum with the planning, execution and business cycle management best suited to our growing role as a global VoIP solutions player.”

New LignUp Board Members Bring Proven Expertise Mr. Cronan brings more than two decades of management and legal experience in the high-tech industry. Before becoming SVP of finance and administration and CFO at Redback, Mr. Cronan was vice president, general counsel and corporate secretary for the company. Prior to joining Redback, he served as in-house legal counsel for both public and private high technology companies for more than 15 years, including IBM, Entrust, OpenTV, Taligent and enCommerce. Earlier in his career he was special counsel at Wilson Sonsini Goodrich and Rosati in the Technology Licensing group.

Mr. Efstratis is a venture capitalist at the Wasatch Venture Fund, an affiliate fund of Draper Fisher Jurvetson investing in early stage technology companies, and participated in the LignUp Series A funding announced in April 2005. He is active on the boards of directors of Tricipher, Medsphere Systems, Threshold Networks, Fatpipe Networks, Feed Management Systems and SmileReminder. Prior to venture investing, Mr. Efstratis worked in the Business Development Group at Excite. He was also a founding member of the management team of NetDocuments.

Mr. Petty is a managing director and founding partner of vSpring Capital, an early stage venture capital fund focused on IT and Biotech opportunities, which participated in the LignUp Series A funding announced in April 2005. Prior to vSpring, Scott was COO and a board director of Zuka Juice, a retail organization selling nutritional products. Under Scott’s leadership, Zuka Juice grew from its first store to 96 retail units and over 400 employees until being acquired by Jamba Juice. Previous to Zuka Juice Scott was a consultant with Bain & Company for seven years, where he worked with more than 16 companies re-engineering their strategies for optimum results.

About LignUp Corporation LignUp Corporation delivers a powerful web services based VoIP communications platform deployed with IP-Centrex, Voice Mail, Unified Messaging and IVR web applications. The proven LignUp Communications Platform is powered by VoiceXML, LignUp Media Control XML (MCTRL) and LignUp Call Control XML (CCTRL), and enables the fast and easy creation of unique, high margin VoIP solutions and services. The 100% software, SIP-based, future-ready LignUp Communications Solution enables existing and emerging service providers to create recurring revenue streams by quickly developing enhanced services for their customer base or community. A privately held company, LignUp is based in Silicon Valley, CA and has offices in Salt Lake City, Shanghai and Tokyo. More information on LignUp can be found at www.LignUp.com.

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