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2013 发表于 2013-3-23 23:41:49

ISO/IEC 20116-2004 Information technology — Telecommunications and information

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ISO/IEC 20116-2004 Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Message centre monitoring and mailbox identification supplementary services


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21319817 发表于 2013-8-30 10:40:40

:lol

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