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文档 ISO-IEC 20114 2004 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network (PISN) -- Inter-exchange signalling protocol -- Make cal

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ISO-IEC 20114 2004 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network (PISN) -- Inter-exchange signalling protocol -- Make cal 第 1 页 ISO-IEC 20114 2004 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network (PISN) -- Inter-exchange signalling protocol -- Make cal 第 2 页 ISO-IEC 20114 2004 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network (PISN) -- Inter-exchange signalling protocol -- Make cal 第 3 页
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