DIN ETS 300347-7:2000 数字本地交换(LE)的V-接口.接如网络(AN)支持用V5.2接口.第7部分:数据链接层的试验组结构和试验目的规范
V interfaces at the digital Local Exchange (LE) - V5.2 interface for the support of Access Network (AN) - Part 7: Test Suite Structure and Test Purposes (TSS&TP) specification for the data link layer (Endorsement of the English version ETS 300347-7:1999 a