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ITU-T P.1140 eCall Voice Quality Test Narrowband

ITU-T P.1140 eCall Voice Quality Test Narrowband

ITU-T P.1140 is a voice quality testing system for emergency call (eCall) devices (narrowband).

In the event of a car accident, the emergency call system will automatically dial the emergency call center hands-free. To ensure optimal call quality between the car and the response service, the ITU-T specifies a comprehensive testing method for hands-free emergency calls initiated from the car in ITU-T Recommendation P.1140. HEAD acoustics has commercialized tests for narrowband (NB) calls as ACQUA standard P.1140-NB. The ACQUA standard encompasses the narrowband part of ITU-T Recommendation P.1140 (07/2022) and refers to UNECE AECS-02-02-Rev.8, which includes ITU-T Recommendation P.1140 (06/2015).

  • Other measurement, recording and measuring instruments

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ITU-T P.1140 eCall Voice Quality Test Wideband

ITU-T P.1140 eCall Voice Quality Test Wideband

ITU-T P.1140 is a voice quality testing system for emergency call (eCall) devices (broadband).

In the event of a car accident, the emergency call system will automatically dial the emergency call center hands-free. To ensure optimal call quality between the car and the response service, the ITU-T specifies a comprehensive testing method for hands-free emergency calls originating from cars in ITU-T Recommendation P.1140. HEAD acoustics has commercialized tests for wideband (WB) calls as the ACQUA standard specification UG P.1140-WB. The ACQUA standard covers the wideband part of ITU-T Recommendation P.1140 (07/2022).

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GB/T 45314-2025 China eCall Test Requirements

GB/T 45314-2025 China eCall Test Requirements

The Standardization Administration of China has established a comprehensive testing standard for voice calls during emergency notifications as GB/T 45314-2025.

The ACQUA standard specification GB/T 45314 eCall has been developed and commercialized to implement the acoustic performance compliance verification tests and requirements for narrowband and wideband voice transmission based on GB/T 45314-2025 (Clause 5). All voice signals used in acoustic measurements are in Chinese. The ACQUA standard specification consists of a single ACQUA project, which includes the measurement and analysis of eCall systems capable of processing narrowband and wideband signals. This project has implemented testing and result analysis tools based on the requirements of GB/T 45314-2025 (Clause 5).

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