ITU-T - International Telecommunication Union/ITU Telcommunication Sector
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ITU-T P.1110-2019
Scope
The aim of this Recommendation1 is the definition of user scenarios@ test methods and requirements for wideband hands-free communication in motor vehicles. This Recommendation covers: ?C built-in hands-free systems@ ?C aftermarket hands-free car kits@ ?C corded headsets@ and ?C wireless headsets to be used in motor vehicles for communication. Furthermore@ the compatibility between narrowband and wideband implementations is addressed. This Recommendation addresses the test of complete systems as well as the subsystems hands-free microphone@ and the telephone with short-range wireless transmission link used to transmit the speech signals from the hands-free system to the mobile network. This Recommendation is applicable to systems where the overall speech bandwidth is wideband@ including systems where parts of the chain have greater bandwidth (e.g.@ wideband hands-free unit with super-wideband cellular transmission). For testing purposes@ the test set-up and the recommended environmental conditions are described. The methods@ the analysis and the performance parameters described in this Recommendation are based on test signals and test procedures@ as defined in [ITU-T P.501]@ [ITU-T P.502]@ [ITU-T P.340]@ [ITU-T P.380]@ [b-ETSI ES 202 739]@ and [b-ETSI ES 202 740]. Although important subjective testing is outside the scope of this Recommendation@ guidance on how to conduct subjective tests can be found in clause 14.
ITU-T P.1110-2019 history
2019ITU-T P.1110-2019 Wideband hands-free communication in motor vehicles (Study Group 12)