Tokyo: IoT platform provider Soracom has introduced Soracom Air RTC Gateway, a new cloud-based service that enables voice communication from Internet of Things (IoT) devices to be seamlessly routed to contact centers, VoIP providers, or AI-powered voice agents. The solution is designed to simplify voice connectivity by using a device’s SIM identity for call routing, eliminating the need for custom software or voice application development on the device itself.
The launch expands Soracom’s cloud-native IoT platform, which already offers connectivity, cloud integration, and AI services. By enabling built-in cellular voice to operate as a managed cloud service, the company aims to simplify deployment while reducing the complexity and cost of voice-enabled IoT solutions.
Simplifying Voice Connectivity for IoT Devices
Many connected devices including parking payment terminals, building access systems, elevator emergency buttons, medical call systems, and connected vehicles require users to speak directly with a support representative during critical situations. The growing adoption of generative AI has also increased demand for AI-powered voice assistants capable of handling initial customer interactions before escalating calls to human agents.
Traditionally, implementing these capabilities has required developers to manage individual phone numbers, configure complex call-routing systems, and build dedicated voice applications for each device. Soracom’s new service addresses these challenges by receiving standard cellular voice calls in the cloud and automatically routing them based on SIM identity and device information such as SIM groups and tags.
Because the gateway supports any IMS/VoLTE-compatible communication module, manufacturers can use native cellular voice functionality without installing additional software or developing dedicated voice applications. Authentication is handled through the SIM itself, removing the need for separate user credentials while strengthening security.
Cloud-Based Voice Routing
Voice traffic travels securely from the IoT device over Soracom Air using Voice over LTE (VoLTE). Once received in the cloud, the Air RTC Gateway converts the call into Voice over Internet Protocol (VoIP), allowing it to be directed either to an external VoIP provider through the internet or via Soracom’s Virtual Private Gateway to enterprise communication systems, IP PBXs, contact centers, or AI-powered voice platforms hosted in the customer’s cloud environment.
When integrated with conversational AI, the system can provide 24/7 automated first-response support, collect initial information, and transfer complex cases to human agents when required.
Expanding Enterprise and Industrial Applications
Soracom said the service can also work alongside its eSIM Profile Order solution and Virtual Private Gateway to transform eSIM-enabled corporate devices into secure office extensions, enabling employees to access internal business systems while working remotely.
According to Kenta Yasukawa, CTO and Co-Founder of Soracom, the company views voice as the next evolution of its IoT platform, enabling people, connected devices, and AI to communicate through a single managed infrastructure.
The Air RTC Gateway is designed for a broad range of applications across industrial automation, mobility, healthcare, public infrastructure, and enterprise environments. Potential use cases include remote support for construction and agricultural equipment, emergency communications from elevators and security systems, nurse-call and telemedicine services, connected vehicle support, AI-powered customer service, and secure enterprise voice communications.
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