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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Short message service. Original standard ISO IEC 21989-2002 in PDF full version. Additional info + preview on request

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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Short message service. Original standard ISO IEC 21990-2002 in PDF full version. Additional info + preview on request

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Information technology - Telecommunications and information exchange between systems - Corporate Telecommunication Networks - Signalling interworking between QSIG and H.323 - Call completion supplementary services. Original standard ISO IEC 21991-2002 in PDF full version. Additional info + preview on request

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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Mapping functions for the tunnelling of QSIG through IP networks. Original standard ISO IEC 21992-2003 in PDF full version. Additional info + preview on request

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Information technology - Data interchange on 12,7 mm, 384-track magnetic tape cartridges - Ultrium-1 format. Original standard ISO IEC 22050-2002 in PDF full version. Additional info + preview on request

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Information technology - Data interchange on 12,7 mm, 448-track magnetic tape cartridges - SDLT1 format. Original standard ISO IEC 22051-2002 in PDF full version. Additional info + preview on request

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