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).
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basic information
The narrowband part of ITU-T Recommendation P.1140 has been fully implemented and commercialized as the ACQUA automated testing standard. ITU-T Recommendation P.1140 is the only publicly available standard for eCall quality testing in the world. Compliance with ITU-T Recommendation P.1140 and UNECE AECS can be tested. Complete synchronization of background noise simulation ensures full reproducibility of tests.
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Automatic quality analysis, experimental development, and optimization of in-vehicle emergency communication systems in accordance with the following standard specifications. › ITU-T Recommendation P.1140 › UNECE AECS-02-02-Rev.8
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Company information
HEAD acoustics Japan Co., Ltd. has been active as a leading company in the fields of dummy head-related recording and playback systems, acoustic analysis based on human auditory characteristics, and communication measurement technology for over 25 years. HEAD acoustics has consistently been a pioneer in developing innovative technologies such as dummy head-related binaural technology, acoustic analysis related to human hearing, interactive sound simulation systems, and transmission path analysis. HEAD acoustics will continue to focus on research and development through collaboration with universities and other research institutions and participation in international research projects.
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