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Innovative return technology results in new service offerings with three times more throughput in shared bandwidth networks; performance validated by early adopter Speedcast

Herndon, Va., December 2, 2020 - ST Engineering iDirect, a global leader in satellite communications, today announced that its MDM5010 modem has achieved an aggregate speed of 600Mbps, making it the industry’s fastest satellite modem for shared bandwidth capacity networks. While these speeds have previously only been achieved with single channel per carrier (SCPC) point-to-point modems, bandwidth-sharing efficiencies can now be augmented to satisfy the most demanding throughput requirements in markets such as cruise, trunking and cellular backhaul. 

Delivering three times more return throughput at 200Mbps using the innovative Mx-DMA return technology, coupled with up to 400Mbps on the DVB-S2X outbound for an aggregate speed of 600Mbps, the MDM5010 modem delivers enhanced Quality of Experience (QoE) for high throughput applications such as broadband connectivity to thousands of cruise passengers, crew and devices, including rich media streaming and content uploading.

ST Engineering iDirect’s Mx-DMA return technology, a core feature of the award-winning Newtec Dialog® platform, is a patented, efficient and dynamic waveform which enables service providers to seamlessly share satellite capacity more efficiently over a group of satellite modems. In this latest Dialog Release 2.2.3, the maximum return symbol rate per modem increased from 20Msps to 68Msps, which equates to a throughput increase from 70Mbps to 200Mbps on the inbound.

“This is of huge significance, especially for the maritime and cell backhaul markets where demand for throughput and performance is increasing exponentially,” said Bart Van Poucke, Vice President, Products, ST Engineering iDirect. “With the need for very high speeds on the inbound, we pushed the boundaries of our Mx-DMA return technology to break the speed limit while increasing the flexibility and operational efficiencies that our customers depend on. This breakthrough will deliver the highest quality connectivity experience for users and enable our customers to offer the widest range of applications to expand their market share.”

Longtime partner and early adopter Speedcast International, a communications and IT services provider, validated the performance of the MDM5010 operating with the latest Mx-DMA waveform. Speedcast has deployed the technology across key sectors supported by their global multi-band network including cruise vessels, mega yachts, and other customer sets with significant bandwidth requirements. The Dialog platform and MDM5010 modems enable Speedcast to maximize bandwidth efficiencies by mixing very high speeds with large-scale modem deployments in the same bandwidth pool, equipping it to support higher throughput to meet passenger and operational demands while operating effectively across a multi-beam, multi-band satellite network.

“Speedcast has embarked on a strategic initiative to completely rearchitect our global mobility network, building a platform that can support the most demanding of customer operations, and any application requirement.  We view Dialog as a fundamental building block of Speedcast’s new Unified Global Platform. The combined strengths of our overarching architecture and best-of-breed technology means that we can deliver the speeds and flexibility that meets our clients’ emerging requirements and operational needs across multiple verticals, including fixed terminals, rapid deploy terminals and mobility,” said Chris Hill, Chief Technology Officer, Speedcast.  “From a technical perspective, the MDM5010 is an important part of the upper bound of our network platform, allowing us to deliver satellite links that are impressive not only in terms of Mbps, but also in terms of packet per second and simultaneous session counts.  Many of our clients are already benefiting from this latest generation technological innovation, and we look forward to the further deployment to customers as our network re-architecture continues to progress.”


ST Engineering North America is the U.S. headquarters of ST Engineering, a global technology, defense and engineering group specializing in the aerospace, electronics, land systems, and marine sectors.   Based in Alexandria, VA, it has major operations across 17 cities in 13 states and employs about 5,500 people providing innovative products and solutions to commercial and government customers across diverse market segments.

ST Engineering iDirect, a subsidiary of ST Engineering North America, is a global leader in satellite communications (satcom) providing technology and solutions that enable its customers to expand their business, differentiate their services and optimize their satcom networks. Through the merger with Newtec, a recognized industry pioneer, the combined business unites over 35 years of innovation focused on solving satellite’s most critical economic and technology challenges and expands a shared commitment to shaping the future of how the world connects. The product portfolio, branded under the names iDirect and Newtec, represents the highest standards in performance, efficiency and reliability, making it possible for its customers to deliver the best satcom connectivity experience anywhere in the world. ST Engineering iDirect is the world’s largest TDMA enterprise VSAT manufacturer and is the leader in key industries including broadcast, mobility and military/government. In 2007, iDirect Government was formed to better serve the U.S. government and defense communities. For more information on iDirect platforms please visit  

Speedcast International Limited (ASX: SDA) is the world’s most trusted communications and IT services provider, delivering critical communications solutions to the Maritime, Energy, Mining, Media, Telecom, Cruise, NGO, Government, and Enterprise sectors. With more satellite capacity than any other provider, Speedcast enables faster, seamless pole-to-pole coverage from a global hybrid satellite, fiber, cellular, microwave, MPLS and IP transport network with direct access to public cloud platforms.  The company also integrates differentiated technology offerings that provide smarter ways to communicate and distribute content, manage network and remote operations, protect and secure investments, and improve the crew and guest experience. With a passionate customer focus and a strong safety culture, Speedcast serves more than 3,200 customers in over 140 countries. Learn more at

Speedcast® is a trademark and registered trademark of Speedcast International Limited. All other brand names, product names, or trademarks belong to their respective owners.

© 2020 Speedcast International Limited. All rights reserved.

Media contacts:        

Julie Bettinger
Vice President, Corporate Marketing
ST Engineering iDirect
Phone: +1 703 648 8155

Guy Shields
Director, Corporate Communications
ST Engineering North America
Phone: +1 703 739 2610

Alix Wright
Senior Vice President, Marketing Communications

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