Integrated Services Digital Network (ISDN) - Primary rate User-Network Interface (UNI) - Part 2: Conformance test specification for interface I<(Index)A> and I<(Index)B>; English version ETS 300011-2:1998
综合业务数字网(ISDN).主要速率用户网络接口(UNI).第2部分:接口I<(索引)A>和I<(索引)B>的一致性测试规范;英文版ETS 300011-2:1998