YD/T 2308-2011 in English

本标准规定了车载窄带（300 Hz～3.4 kHz）免提语音通信设备的性能要求、测试配置、测试所需的环境条件和测试方法。
本标准适用于原装车载窄带免提系统、后期安装的车载窄带免提附件、车载使用的有线头戴机和无线头戴机，既包括对完整车载免提（通信）系统和车载免提麦克风的测试，也包括对移动电话终端短距离无线传输（SRW）性能的验证。

Scope

This standard specifies the performance requirements, test configurations, environmental conditions and test methods required for vehicle-mounted narrowband (300Hz ~ 3.4kHz) hands-free voice communication (hereinafter referred to as vehicle-mounted hands-free) equipment. This standard applies to original vehicle-mounted narrowband hands-free systems, later-installed vehicle narrow-band hands-free accessories, wired headsets and wireless headsets used in vehicles, including both complete vehicle hands-free (communication) systems and vehicle hands-free microphones. Testing also includes verification of short-range wireless transmission (SRW) performance of mobile phone terminals.