Forum Plugfest II sponsor offers its Hammer for IMS test portfolio to facilitate
multivendor IMS interoperability

BEDFORD, Mass. � May 31, 2007 � Empirix (News - Alert)® Inc., which helps organizations adopt complex
communications solutions with confidence, announced today that its Hammer Testing and Monitoring Portfolio will be used at the second IMS Forum (News - Alert) Plugfest, taking place during the week of June 4th at the University of New Hampshire Interoperability Lab (UNH IOL). Empirix�s Hammer portfolio will be utilized in a variety of scenarios throughout the week to simulate SIP

and IMS end users and emulate IMS infrastructure devices, including the Diameter-based HSS. Empirix�s Hammer XMS service monitoring system will also be used to monitor and analyze the various tests performed at the Plugfest. The goal of the second Plugfest will be to examine the interoperability of IMS �Quadruple Play (News - Alert)� applications and services to identify products and services for voice, video and mobility across multiple wireline, wireless and cable broadband networks. Tests that will be run using Empirix�s Hammer for IMS portfolio include instant messaging, fax over IP

,presence, and multi-domain calls, among others.

�Having participated in the first IMS Forum Plugfest, which was a huge success for both Empirix as well as the Forum itself, we were ready to come back for round two,� said Gordon Beith, Senior Product Manager at Empirix, and an active contributor to the IMS Forum. �As Empirix focuses heavily on creating solutions that enable companies to feel confident about their IMS adoption plans, our role in the second Plugfest will give us an opportunity to demonstrate Empirix�s expertise and knowledge in helping vendors interoperate in an IMS environment. Specifically, we�re very interested in more advanced tests of IMS applications and interaction with the HSS via the Diameter protocol. We�re looking forward to working with the other Plugfest participants on true applications this time around, and building upon the tests we conducted during the first Plugfest focusing on basic call scenarios.�

�We�re glad to have Empirix, with its demonstrated expertise in testing and monitoring complex technologies, participating in the second consecutive Plugfest event, and we�re excited to have them as one of our Platinum sponsors as well,� said Michael Khalilian, Chairman & President of the IMS Forum and CTO of Pervasip Corp. �We�ve got a new set of challenges outlined for our participants this time around, but we�re confident that, like the first Plugfest, the companies will rise to the occasion and achieve even greater success.�

For 15 years, Empirix�s Hammer test and monitoring solutions have helped Network Equipment
Manufacturers (NEMs), Service Providers and Enterprises successfully transition to new technologies, spanning TDM/PSTN

, VoIP, NGN, and now IMS-based networks spanning the 3GPP architecture and ETSI TISPAN. To date, all of the world�s Top 10 NEMs and virtually all of the top service providers use Empirix�s Hammer solutions. As part of its mission to help enable the adoption of complex new technology waves, Empirix is a member of several quality-focused organizations, including the Multi-Service Forum, the recently launched Voice & Video over IP Quality Alliance (V2oIPQA) and the IMS Forum.

About Empirix
Empirix helps organizations adopt complex communications solutions with confidence. We combine the industry�s deepest knowledge of telecommunications and self-service applications with award-winning testing and monitoring solutions to ensure our customers realize the promise of their technology investments. Empirix is the only company with expertise that spans the evolution of these advanced technologies across multiple markets � from testing in R&D labs through monitoring the end-user experience. For over a decade, thousands of quality-conscious network equipment manufacturers, service providers and enterprises worldwide have trusted Empirix to reduce the time and cost of integrating new technologies into existing environments. Visit www.empirix.com.

About The IMS Forum
The IMS Forum® is a global, non-profit industry association devoted to interoperable IP Multimedia Subsystems services and solutions. IMS Forum�s mission is to accelerate the interoperability of IMS applications and services, enabling enterprise and residential consumers to quickly benefit from the delivery of quadruple play voice, video, internet and mobile services over broadband via cable, wireless and fixed networks. The IMS Forum is the creator and organizer of the IMS Plugfest�, the industry�s only event focused on IMS services interoperability verification and certification. Through its organized Plugfests, working group interaction, and other activities, forum members are able to develop cost-effective technical frameworks for converged IP services over wireline, cable, 3G, WiFi (News - Alert) and WiMAX

networks. Plugfest II will be held June 4-8, 2007 at the IMS Forum UNH Interoperability Lab. Plugfest II results will be released at NXTcomm (News - Alert), June 18�21, 2007, at the IMS Forum�s booth #3669. For additional information or to join the IMS Forum and the IMS Plugfests, please visit www.IMSForum.org.

About the University of New Hampshire Interoperability Lab
The UNH-IOL is a world renowned, vendor neutral testing center associated with the University of New Hampshire. Since its inception in 1988, the laboratory has grown into one of the industry�s premier centers for testing and proving cutting-edge networking and data communications products. Testing is conducted in a top-tier, 32,000-square-foot testing facility that houses a wide array testing equipment and devices. Additional equipment is being imported to support the testing needs of the IMS Plugfest 2007. For more information, visit www.iol.unh.edu.
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Empirix and Hammer are trademarks or registered trademarks of Empirix Inc. in the United States and other countries. All other trademarks contained herein are the property of their respective owners.

For information, contact:
Jenny Viscarolasaga
For Empirix Inc.
617-331-4944
jenny@tworoadscommunications.com

Cathy Clarke
For The IMS Forum
617-527-2089
pr@imsforum.org