Tempe, Arizona, November 22, 2011– Comtech EF Data Corporation and Thrane & Thrane announced today the successful completion of interoperability testing of the SAILOR 900 VSAT marine stabilized antenna systems and the ROSS Open Antenna Management (ROAM) protocol.  The interoperability will enable the SAILOR 900 VSAT antenna systems on maritime vessels to globally roam across multiple satellite beams, maintaining connectivity moving through different satellite footprints and enhancing communication capabilities at sea.  

The ROAM protocol offers a common management interface for Comtech EF Data’s Roaming Oceanic Satellite Server (ROSS) and third-party Antenna Control Units (ACUs) by providing a generic set of commands, information, interfaces and status queries.  ROSS is an integrated location server that works in conjunction with Comtech EF Data’s Vipersat Management System to facilitate on-the-move satellite communications for oceanic vessels.  ROSS enables remote modems to interface with stabilized, auto-tracking antennae, maintaining connectivity as vessels move through footprints of different satellites. Vessel position data, satellite signal and management status are constantly monitored to determine when satellite handoff is necessary. 

As ROSS can support many types of ACUs, the ROAM protocol reduces the complexity and the variations by providing basic parameters required to globally roam across multiple satellite beams.  The ROAM protocol provides uniformity in implementation of third-party antenna manufacturers’ interfaces, while enabling the unique characteristics and proprietary techniques of different manufacturers.

“The interoperability of the ROAM protocol and ROSS automation with the SAILOR 900 VSAT will provide maximum bandwidth efficiencies and roaming capabilities for maritime operators’ satellite-based communications,” said Daniel Enns, Senior Vice President Strategic Marketing and Business Development for Comtech EF Data.

The SAILOR 900 VSAT is an advanced maritime stabilized Ku-band antenna system built with the same high quality and performance that has made SAILOR the leading name in professional maritime communication equipment.  Prior to starting the actual design process, Thrane & Thrane collected extensive ship motion data over a sustained period.  This data was used in the industry’s first and only custom Vessel Dynamics Simulator, which enabled the simulation of ship forces and significantly increased life time testing.

“The SAILOR 900 VSAT is a paradigm shift for maritime VSAT antenna systems,” commented Casper Jensen, VP Maritime Business Unit, for Thrane & Thrane.  “When combined with Comtech’s market-leading technologies, our maritime customers can significantly enhance their communications at sea.”

About Thrane & Thrane
Thrane & Thrane is the world's leading manufacturer of equipment and systems for global mobile radio and satellite communication. Since its incorporation in 1981, the company has established a strong position within global mobile communication solutions based on the Inmarsat system and today, Thrane & Thrane provides equipment for use on land, at sea and in the air. The company's communication products are sold throughout the world under the brands Thrane & Thrane, EXPLORER™ SAILOR® and AVIATOR through distributors and partners. Thrane & Thrane is listed on NASDAQ OMX Copenhagen (symbol: THRAN). www.thrane.com

About Comtech EF Data
Comtech EF Data Corporation, a subsidiary of Comtech Telecommunications Corporation (NASDAQ: CMTL), is the recognized global leader in satellite bandwidth efficiency and link optimization. The advanced communication solutions encompass the Advanced VSAT Solutions, Modems, WAN Optimization, Managed Bandwidth and RF products. The Company is recognized as a technology innovator, and has a reputation for exceptional product quality and reliability. The solutions enable commercial and government users to reduce OPEX/CAPEX and to increase throughput for fixed and mobile/transportable satellite-based applications. For more information, visit www.comtechefdata.com.

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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