Pictograms symbols and icons to assist users of the telephone and telefax services SERIES E: OVERALL NETWORK OPERATION TELEPHONE SERVICE SERVICE OPERATION AND HUMAN FACTORS International operation General provisions concerning users Study Group 2
标准号:ITU-T E.121-2004
标准名称: 帮助电话业务用户识别的图文、符号和图像 系列E:整个网络运营、电话服务、服务运营及人类因素运营,号码
英文名称:Pictograms symbols and icons to assist users of the telephone and telefax services SERIES E: OVERALL NETWORK OPERATION TELEPHONE SERVICE SERVICE OPERATION AND HUMAN FACTORS International operation General provisions concerning users Study Group 2
标准类型:国外标准
标准状态:现行
中国标准分类号(CCS):M32
国际标准分类号(ICS):33.060.80