OTTAWA, ONTARIO, May 31, 2007 –– March Networks™ (TSX:MN; AIM:MNW), a leading provider of IP-based video surveillance solutions, announced today that 96 new Electrostar cars for the Gautrain Rapid Rail Link in Gauteng Province, South Africa, will be equipped with the Bombardier SEKURFLO transit security solution. The video surveillance component of the SEKURFLO solution is jointly designed and developed by Bombardier Transportation and March Networks.

Encompassing 80 km of dual-lane track, the Gautrain will connect Johannesburg and Tshwane (Pretoria) with OR Tambo International Airport. It will begin operation in two phases, with the first slated for completion in June 2010, when the country will host the FIFA World Cup. The transportation system is expected to serve approximately 140,000 passengers daily by 2010.

The SEKURFLO solution will enable Gautrain personnel to monitor driver and passenger safety and deter theft and vandalism. It will also alert staff to potential emergencies and provide visual information to accelerate response. The solution combines video management platforms with onboard systems integration to ensure effective operation and lower cost of ownership.

“Designed for demanding applications in passenger rail environments, the SEKURFLO solution provides world-class rail systems such as the Gautrain with an intelligent rail security solution that promotes safety and operational efficiency,” said Peter Strom, President and CEO of March Networks. “We are proud to be involved in this exciting project and will continue to collaborate with Bombardier to deliver sophisticated mobile security management to rail operators worldwide.”

About Bombardier
A world-leading manufacturer of innovative transportation solutions, from regional aircraft and business jets to rail transportation equipment, systems and services, Bombardier Inc. is a global corporation headquartered in Canada. Its revenues for the fiscal year ended Jan. 31, 2007, were $14.8 billion US, and its shares are traded on the Toronto Stock Exchange (BBD). News and information are available at www.bombardier.com.

Forward-Looking Statements
This release contains certain forward-looking information, including expectations of future business. This information is based on the company’s current expectations and assumptions that are subject to a variety of risks and uncertainties that are difficult to predict and that may be beyond March Networks’ control. Actual results could differ materially from those expressed in any forward-looking statements due to factors such as customer demand and timing of purchasing decisions, increased levels of competition, technological changes and the successful development of new products, dependence on third-party manufacturers, risks relating to intellectual property infringement claims, and other risks and factors identified in March Networks’ public filings with regulatory authorities in Canada. March Networks assumes no obligation to update these forward-looking statements as a result of new information or future events.

MARCH NETWORKS and the MARCH NETWORKS logo are trademarks of March Networks Corporation. Bombardier, SEKURFLO and Electrostar are trademarks of Bombardier Inc. or its subsidiaries. All other trademarks are the property of their respective owners.