PN ETS 300 520-2005 Digital Cellular Telecommunications System (phase 2) - Call Barring (cb) Supplementary Services - St...
- PN ETS 300 520-2005 Digital Cellular Telecommunications System (phase 2) - Call Barring (cb) Supplementary Services - St...（ 现行 ）
- 发布日期：2018-06-28 实施日期： 发布部门：
- 简介：PN ETS 300 520-2005 Digital Cellular Telecommunications System (phase 2) - Call Barring (cb) Supplementary Services - St...