A new partnership between Harman and Viasat will introduce in-cabin voice calling over satellite connectivity.
The solution combines Harman’s Ready Connect Telematics Control Unit (TCU) with Viasat’s mobile satellite services (MSS) constellation to provide voice communication in areas with intermittent or no cellular coverage. The satellite-based feature is designed to complement, not replace, terrestrial networks by offering low-data-rate, safety-relevant connectivity when cellular service is unavailable.
Reliable voice calling
Many journeys and commutes span regions with limited cellular network coverage. In order to connect the unconnected, the Harman and Viasat collaboration provides enhanced voice communication to support vehicle users in reaching critical services when it matters most.
The voice-calling capability leverages Harman’s Ready Connect TCU, which supports 4G, 5G and Narrowband Non-Terrestrial Network (NB-NTN) satellite connectivity using the same base solution. Viasat, acting as the satellite network operator (SNO), provides access to its highly reliable satellite network and licensed global spectrum rights, ensuring a high-quality, reliable service backed by decades of operational experience.
Satellite voice calling ensures that drivers and passengers can reliably contact and speak with safety-critical services or roadside assistance in areas with limited or no cellular connectivity to provide crucial details in the event of an incident, injury or stranded vehicle. The capability also supports personal calls to update family or friends during unexpected or emergencies.
“Harman’s MWC [Barcelona 2026] showcase underscores our commitment to advancing non-terrestrial network integration and working with ecosystem partners to bring next generation connected experiences to market,” said Dhanaji Khade, vice president, ready connect business lead at Harman.
“Through our collaboration with Viasat, Harman Ready Connect demonstrates how its satellite-enabled architecture, which supports the 3GPP NB-NTN standard, can extend communication beyond traditional terrestrial networks. This includes enabling voice services that facilitate immediate safety and emergency assist applications.
“Working alongside innovators such as Viasat and building on our legacy of in-cabin innovation, decades of automotive expertise and significant investment in engineering and state-of-the-art technologies, Harman is uniquely positioned to deliver transformative in-vehicle products and solutions that elevate safety, productivity and entertainment, even in challenging environments.”
“Satellite connectivity has arrived for the automotive industry,” added Sandeep Moorthy, senior vice president, advanced non-terrestrial services at Viasat. “Through our collaboration with Harman, vehicles can now connect directly to our satellite network. That means major benefits for drivers all around the world; not only to stay safe when they’re outside of cell coverage, but to access the range of applications that space technology can bring.”
Beyond voice calling
Alongside voice calling, the collaboration supports messaging, emergency SOS features and low-data-rate telematics use cases through NB‑NTN satcom and Ready Connect. This includes benefits like remote vehicle operation, stolen vehicle tracking and remote vehicle diagnostics.
The Harman and Viasat partnership also includes a roadmap to broadband SatCom services enabled by Viasat.
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