definition of the aspects of the packet-mode services provided to the ISDN users in accordance with the bearer services defined in I-Series Recommendations; definition of the procedures at the ISDN user-network interface for accessing packet-mode services
ITU-T X.31-1995由国际电信联盟 IX-ITU 发布于 1995-01-01。
ITU-T X.31-1995 在中国标准分类中归属于: M32 数据通信设备,在国际标准分类中归属于: 33.080 综合业务数字网(ISDN)。
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