Principles and responsibilities for the management assignment and reclamation of E-series international numbering resources Amendment 1 Study Group 2
国外标准现行
标准号:ITU-T E.190 AMD 1-2009
标准名称: E系列国际号码资源的管理,分配和回收的原则和责任.1号修正案.2号研究组
英文名称:Principles and responsibilities for the management assignment and reclamation of E-series international numbering resources Amendment 1 Study Group 2