The EN 18052 hybrid eCall specification requires systems to support multiple communication paths and protocols to ensure emergency calls are delivered reliably. In real-world use, vehicles primarily rely on NG eCall technologies using IP/IMS-based communication over 4G and 5G networks, while automatically switching to traditional circuit-switched eCall over 2G or 3G if network quality weakens. Automakers must verify that these hybrid systems can successfully initiate calls, send minimum set of data (MSD), maintain accurate GNSS location tracking, and provide clear voice communication across various network environments such as VoNR, VoLTE, and circuit-switched fallback. Testing also confirms system stability during network handovers, poor radio conditions, and compliance with CEN, ETSI, 3GPP, and national standards.
Rohde & Schwarz has updated its eCall evaluation solution, CMX-KA09x, to support compliance with EN 18052:2025 and EN 17240:2024+A1:2026. The CMX-KA099 option successfully completed Public Safety Answering Point (PSAP) test scenarios in accordance with EN 18052:2025, while the CMX-KA098 option successfully completed PSAP test scenarios in accordance with EN 17240:2024+A1:2026. This marks an important step toward meeting European requirements for NG eCall test systems.
“We use the solution for functional tests and protocol conformity tests as well as for the type-approval of In-Vehicle Systems (IVS) that implement hybrid eCall and NG eCall,” says Thomas Reschka, Senior Technical Consultant at cetecom advanced. “The test environment allows the simulation of real-world mobile network conditions and the emulation of various network scenarios. This is a significant advantage in preparing for certifications or the market launch of new vehicle models.”
Through this collaboration, both companies aim to empower the automotive industry to ensure the rapid adoption of next-generation vehicle communications that prioritize safety.
