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).
- Company：ヘッドアコースティクスジャパン
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