The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical,
ITU-T D.140-2002由国际电信联盟 IX-ITU 发布于 2002-06-01。
ITU-T D.140-2002 在中国标准分类中归属于: M02 经济管理。
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号