Terminal Equipment (TE); Telephony for the hearing impaired; Electrical coupling of telephone sets to hearing aids
终端设备（TE）；为听力受损者提供电话服务；电话机与助听器的电耦合

1996-09-01

Terminal Equipment (TE); Telephony for hearing impaired people; Characteristics of telephone sets that provide additional receiving amplification for the benefit of the hearing impaired
终端设备（TE）；为听力受损者提供电话服务；为听力受损者提供额外接收放大功能的电话机特性

1996-01-01

Terminal Equipment (TE) - Telephony for hearing impaired people - Characteristics of telephone sets that provide additional receiving amplification for the benefit of the hearing impaired; English version ETS 300488:1996
终端设备（TE）.听力受损者的电话.为听力受损者提供额外接收放大功能的电话机特性；英文版ETS 300488:1996

1996-08-01