Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Specification, functional model and information flows Call Transfer supplementary service
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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call completion supplementary services
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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Inter-exchange signalling protocol Name identification supplementary services
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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Inter-exchange signalling protocol Call Transfer supplementary service
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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Inter-exchange signalling protocol Call Completion supplementary services
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Information technology - Telecommunications and information exchange between systems - Private telecommunications networks - Digital channel aggregation
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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Specification, functional model and information flows Call Diversion supplementary services
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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Inter-exchange signalling protocol Call Diversion supplementary services
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