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现行 ETS 300 046-3
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Integrated Services Digital Network (ISDN); Primary Rate Access - Safety & Protection Part 3 : Interface Ia - Protection 综合业务数字网(ISDN);主要速率访问-安全和保护第3部分:接口Ia-保护
发布日期: 1992-08-01
ISDN连接的安全和保护批准要求
Safety and protection approval requirements for connection to ISDN
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发布单位或类别: 未知国家-其他未分类
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