InfoVista Addresses Quality of Service for Business-Critical IP Telephony Applications at VON

InfoVista (NASDAQ:IVTA)

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WHAT:       Internet protocol (IP) telephony has introduced an
            unprecedented level of complexity into IT management.
            Addressing network performance issues as they unfold is no
            longer effective to meet user expectations. Service
            providers must embrace an approach to performance
            management that supports predictive visibility and
            flexibility to respond to the new requirements and
            challenges of IP convergence. In his presentation,
            "Managing IP Telephony as a Service," InfoVista's Director
            of Product Management for Network Solutions Bruno Zerbib
            will discuss how to adopt a service delivery-oriented
            approach, prioritizing performance problem identification
            and resolution based on business end-user impact to
            deliver the highest service levels.

            Throughout the conference, InfoVista will also demonstrate
            VistaInsight for IP Telephony 2.0, the latest version of
            the company's performance management solution for assuring
            delivery of IP telephony services across the enterprise.
            Visit Zerbib and InfoVista at booth #145.

WHERE:      VON Fall 2005
            Boston Convention & Exhibition Center
            Boston
            Sept. 19-22, 2005

WHEN:       Tuesday, Sept. 20, 2005, at 4:00 p.m. ET
            "Managing IP Telephony as a Service"

ABOUT
INFOVISTA:  InfoVista is the Service-Centric Performance Management
            Software Company that assures the optimal delivery of
            business-critical IT services. Driven by a uniquely
            adaptive and real-time technology foundation, InfoVista
            solutions improve business effectiveness, reduce operating
            risk, lower cost of operations, increase agility and
            create competitive advantage. Eighty percent of the
            world's largest service providers as ranked by Fortune(R),
            as well as leading Global 2000 enterprises, rely on
            InfoVista to enhance the business value of their
            technology assets. Representative customers include ABN
            AMRO, Allstream, Banques Populaires, AXA, Banque de
            France, Bell Canada, British Telecom, Broadwing
            Communications, Cable & Wireless, Com Hem, Defense
            Information Systems Agency (DISA), Deloitte & Touche,
            Deutsche Telecom, France Telecom, Savvis Corporation,
            SingTel, Telefonica, and US Cellular. InfoVista stock is
            traded on the NASDAQ (IVTA) and on Eurolist by Euronext
            (FR0004031649). For more information about the company,
            please visit www.infovista.com
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