MONTREAL, QUEBEC, February 20, 2007 – Memotec Inc., a subsidiary of Comtech EF Data Corporation, announced today the availability of its second generation cellular backhaul optimization product line, the CX-U Series.

Packaged in a compact 1U chassis, the new platform provides mobile operators with a comprehensive solution for Radio Access Network (RAN) optimization.  The CX-U Series leverages the proven bandwidth optimization software previously available in the CX-9 Series Multiservice Gateways, which has been extensively deployed for satellite-based cellular backhaul.  The CX-U Series extends Memotec’s RAN optimization capabilities beyond satellite-based networks to include terrestrial networks, microwave-based trunks and leased lines, where the traffic growth and number of base stations (BTSs) is currently straining the network transmission capacity.

"The CX-U Series provides mobile operators with a cost-effective solution to increasing the capacity of the existing RAN and an alternative to undergoing a costly forklift upgrade of their access transmission network," said Yves Hupe, vice president of marketing, Memotec Inc. "The new platform increases the transmission network efficiency by a factor of two or three, enabling rapid deployment of 3G and mobile data services at a minimum cost and without additional operating expenses."

Available in a variety of configurations, the CX-U Series offers a scalable and flexible solution to connect a single BTS or to groom multiple BTSs, including GSM, CDMA and 3G base stations. When combined with Comtech EF Data’s bandwidth-efficient Satellite Modems, the CX-U Series facilitates service expansion into remote and developing regions, and is a competitive alternative to traditional terrestrial solutions.

With equipment supporting more than 35 mobile networks and 1,000 Abis links deployed in Asia, Africa and South America, Memotec has a proven track of record of supplying industry-leading GSM backhaul optimization.

Memotec will have the CX-U Series on display in the Comtech booth at the Satellite 2007 show in Washington, D.C. February 20th through 22nd.  Please visit the Comtech booth #308 for additional information.

About Memotec Inc.

Memotec, a subsidiary of Comtech EF Data, is an innovative supplier of optimization solutions for cellular backhaul networks. Its flagship product, the CX Series, enables GSM operators to dramatically reduce network operating expenses by cutting transmission costs, and extending the service capabilities for evolving networks. With equipment deployed in over 1,000 operational cellular sites throughout Latin America, the Middle East, Africa and Asia, Memotec’s solution is proven globally.  Please visit www.memotec.com for more information.

About Comtech EF Data Corporation

Certain information in this press release contains statements that are forward-looking in nature and involve certain significant risks and uncertainties. Actual results could differ materially from such forward-looking information. The Company's Securities and Exchange Commission filings identify many such risks and uncertainties. Any forward-looking information in this press release is qualified in its entirety by the risks and uncertainties described in such Securities and Exchange Commission filings.

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Media Contact:
Sue Wilcox
Comtech EF Data
Voice: 480.333.2200
Fax: 480.333.2540
swilcox@comtechefdata.com