标准编号:NF Z89-488-2001
标准名称:终端设备.听觉损伤者用电话.使听觉损伤者受益的提供附加声音接收放大装置...
英文名称:(Terminal Equipment (TE) - Telephony for hearing impaired people - Characteristics of telephone sets that provide additional receiving amplification for the benefit of the hearing impaired.)
发布部门:
发布日期:2001-10-01
实施日期:
标准状态:现行
文件格式:PDF