ANSI/TIA-4953-2012 电信.电话终端设备.扩音电话测量规程和性能要求

标准号：ANSI/TIA-4953-2012
中文标准名称：电信.电话终端设备.扩音电话测量规程和性能要求
英文标准名称：Telecommunications - Telephone Terminal Equipment - Amplified Telephone Measurement Procedures and Performance Requirements
标准类型：M40
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：M40
国际标准分类号：33.050.10
适用范围：This standard establishes telephone audio performance requirements, measurement methods, and test procedures for telephones with high receive gain and control of the receive frequency spectrum. This standard addresses audio performance in narrow band telephony frequencies using scientific methods and techniques derived or adapted from current telephone measurement standards. Narrow band is defined as the frequency range between 300 and 3400 Hz.