The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITU). CCITT is responsible for studying technical, operating and tariff questions and issuing Recommendations o
ITU-T M.85-1992由国际电信联盟 IX-ITU 发布于 1992。
ITU-T M.85-1992 在中国标准分类中归属于: M01 技术管理。
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