Siemens and Catalyst Communication Technologies, Inc., Announce Strategic Collaboration to Strengthen Interoperable Communications for First Responders and the Military Collaboration Augments Siemens’ Fixed Mobile Convergence and Business Continuity Strengths, Extends Open Communications to Emergency Responders and the Military to Assist in Their Efforts to Save Lives and Property BOCA RATON, Fla.–Siemens Communications, Inc. [NYSE: SI] and Catalyst Communications Technologies, Inc., a leading provider of Radio Control Over IP for public safety and commercial markets, today announced a collaboration to integrate Catalyst’s technology into Siemens HiPath Dispatch command and control center. By extending Open Communications to federal, state, local and tribal public safety responders and the military, Siemens helps to reduce risk and save more lives and property through more reliable, interoperable and coordinated communications during natural and man-made disasters.

Emergency communications interoperability is a hot topic for local, state and federal governments and the military, especially since 9/11 and Hurricane Katrina. In any emergency situation, the key to resolving and mitigating emergencies is to facilitate communications collaboration between separate authorities. Emergency personnel from different organizations and jurisdictions need to communicate over radio systems that employ different technologies. The military requires communications interoperability for optimum combat effectiveness to save lives.

Siemens integrates Catalyst’s technology to provide a single console and user interface that can link to a broad range of radio equipment using standard radio interfaces. Command center and emergency operations center personnel can use the HiPath Dispatch center to communicate with virtually any radio system anytime.

By combining radio and telephony IP interoperability, Siemens’ event management system provides users with features including radio caller ID and emergency alerts, as well as better control of vital information and improved situational awareness. The fast and easy-to-use combination reduces response times and improves utilization of resources. It also leverages the power of fixed mobile convergence – bringing IT, wireline and wireless voice and data together over an IP network – to enhance continuity of operations, improve information gathering and processing, and optimize real-time decision-making.

Customers praise the partnership for improving their ability to improve preparedness and deliver a faster response with seamless communication. “Partnerships like the one between Siemens and Catalyst demonstrate the interest and commitment by manufacturers to develop and enhance strategies for public safety communications interoperability,” said Charles Werner, Fire Chief for the City of Charlottesville, Va., and chairman of the Virginia Statewide Interoperability Executive Committee. “This further stimulates the evolution of radio over IP.”

“Siemens’ open, scalable architecture and its flexible, feature-rich collaboration tools bring the benefits of better integration among communications sources and the versatility that fixed mobile convergence brings to public safety customers,” said Robin Grier, President of Catalyst. “We are honored that Siemens selected us to provide advanced dispatch ability for their solution.”

“Catalyst is at the forefront of developing wireless communications standards for the public safety community and the military, which ties into our goal of enhancing standards-based, open, user-centric communications to best serve public safety,” said Mike Lewis, Vice President of Federal Solutions at Siemens Communications. “This solution helps solve the problem of interoperable communications between different devices and allows the government to respond, assess and take action in a crisis situation, when every moment counts.”

About Siemens

Siemens AG (NYSE:SI) is one of the largest global electronics and engineering companies with reported worldwide sales of $96 billion in fiscal 2005. Founded nearly 160 years ago, the company is a leader in the numerous fields, including medical technology; power systems; automation and control systems; transportation; information and communications; lighting; building technologies; water technologies; and services and home appliances. Based in Munich, Siemens AG and its subsidiaries employ 460,000 in 190 countries. Eleven of Siemens’ worldwide businesses are based in the United States and are supervised from Siemens’ U.S. corporate headquarters in New York City. Siemens’ American operations produce annual sales of $18.8 billion and employ approximately 70,000 people in all 50 states and Puerto Rico. For more information on Siemens in the United States, visit www.usa.siemens.com.

About Siemens Communications, Inc.

Siemens Communications, Inc. is one of the world’s leading vendors of Open Communications solutions for enterprises of all sizes, enabling business processes to be more productive, faster and more secure – with any device, network or information technology infrastructure. The company is a wholly owned subsidiary of Siemens AG with about 15,000 employees globally and headquarters in Boca Raton, Fla. For more information, visit www.usa.siemens.com/communications. About Catalyst Communications Technologies, Inc.

Catalyst Communications Technologies, Inc. creates, markets, and produces Radio Control over IP technology for the mobile radio industry, and is a force for change in the effort to bring Internet-derived technologies into mobile radio applications. Catalyst focuses on products that leverage standard Windows-based computers to reduce cost and increase the efficiency of network operators and end users. Catalyst leverages expertise in IP networking, advanced data processing, mobile radio, and intuitive user interface technologies to make mobile radio voice communications more effective, accessible and interoperable. For more information, visit www.catcomtec.com.