MOUNTAIN VIEW, Calif. – June 13, 2005. LignUp Corporation, a provider of Web services based converged communications solutions, today announced that LignUp has become a Premier Tenant in tekVizion Labs, the first lab of its kind offering third-party certification and testing for Voice over IP (VoIP) products and services.

tekVizion’s "Premier Tenants" are vendors that provide their products to tekVizion Labs to allow other vendors and service providers to test the products. Premier Tenant status significantly enhances the vendor's test capacity by turning tekVizion Labs into an extension of the vendor's own test facilities. Premier Tenant status also speeds up test turnaround time and provides priority interoperability testing for existing and emerging service providers building hosted VoIP solutions.

"LignUp has established a track record of success with unique web services based VoIP solutions for service providers,” said Terri Griffin, chief operating officer of tekVizion. “By featuring LignUp as a Premier Tenant in our labs, we are allowing customers to streamline and accelerate testing, development and deployment of high value hosted IP telephony services. We are pleased to be able to offer vendors interoperability testing for LignUp in our tekVizion Labs."

The LignUp Communication Solution enables the fast and easy creation of unique, high margin VoIP solutions and services. This 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.

The LignUp solution includes the LignUp Communications Platform (LignUp Call Director, LignUp Media Server, and LignUp SDK), and IP-Centrex, Voice Mail, Unified Messaging, and IVR applications built on the powerful web services based LignUp platform. With the LignUp solution, new applications can quickly be built using the VoiceXML, LignUp Call Control XML (CCTRL), and LignUp Media Control XML (MCTRL).

tekVizion Labs offers several types of testing services involving both remote and on-site testing at tekVizion Labs. Remote testing can be used for pre-certification or ad-hoc test scenarios, whereas formal certification is conducted on-site at tekVizion Labs. Certification can be provided between two products or in a multi-product solution. All lab services are available to both vendors and service providers.

"tekVizion Labs provides a unique testing environment for organizations working to rapidly customize and deploy VoIP solutions specific to their industry or functional requirements," said Kevin Nethercott, LignUp president/COO. "LignUp is pleased to extend our relationship with tekVizion as a Premier Tenant, allowing customers to rapidly test solutions and fully leverage the technology and business advantages of VoIP."

Potential customers of tekVizion Labs can request testing via the tekVizion Labs website (www.tekVizionlabs.com) or by contacting program director Jerry Mistrot. The tekVizion Labs website allows anyone to register to be notified when new Premier Tenants join the lab, when products are certified, and when new services are offered by the Labs.

About LignUp Corporation LignUp Corporation delivers a powerful web services based VoIP communications platform deployed with hosted telephony, 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.

About tekVizion PVS, Inc. tekVizion (www.tekvizion.com)is setting the new standard for systems integration in the telecommunications industry. tekVizion Labs(TM) is the first interoperability certification lab of its kind, and tekVizion's suite of FastForward(SM) services helps service providers achieve a smooth transition to packet-voice networks, speeding delivery of integrated services. tekVizion leverages its real-world, multi-vendor integration and test experience and proven processes to provide leading vendors, carriers, and enhanced service providers with solutions that meld legacy and next-generation resources. tekVizion's headquarters, along with a state-of-the-art test lab and Executive Briefing Center, is located in the Telecom Corridor(R) in Richardson, Texas.

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