Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets, and headsets are provided in this revised standard. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless, and mobile communications devices. Measurement results may be used to evaluate these devices on a ...
IEEE Std 269-2002由美国电气电子工程师学会 US-IEEE 发布于 2003-04-25,并于 2003-04-25 实施。
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