33.040.01

Telecommunication systems in general

33.040.20

Transmission systems

33.040.30

Switching and signalling systems

33.040.35

Telephone networks

33.040.40

Data communication networks

33.040.50

Lines, connections and circuits

33.040.60

Powerline telecommunications

33.040.99

Other equipment for telecommunication systems
ISO/IEC 13870:2003

ISO/IEC 13870:2003

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ISO/IEC 13870:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Completion supplementary services

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ISO/IEC 14843:2003

ISO/IEC 14843:2003

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ISO/IEC 14843:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Offer supplementary service

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ISO/IEC 14844:2003

ISO/IEC 14844:2003

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ISO/IEC 14844:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Do Not Disturb and Do Not Disturb Override supplementary services

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ISO/IEC 14846:2003

ISO/IEC 14846:2003

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ISO/IEC 14846:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Intrusion supplementary service

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ISO/IEC 15050:2003

ISO/IEC 15050:2003

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ISO/IEC 15050:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Advice Of Charge supplementary services

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ISO/IEC 15051:2003

ISO/IEC 15051:2003

Active Most Recent

ISO/IEC 15051:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Recall supplementary service

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ISO/IEC 15052:2003

ISO/IEC 15052:2003

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ISO/IEC 15052:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Recall supplementary service

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ISO/IEC 15053:2003

ISO/IEC 15053:2003

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ISO/IEC 15053:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Interception additional network feature

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ISO/IEC 15054:2003

ISO/IEC 15054:2003

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ISO/IEC 15054:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Interception additional network feature

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ISO/IEC 15506:2003

ISO/IEC 15506:2003

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ISO/IEC 15506:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Message Waiting Indication supplementary service

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ISO/IEC 15772:2003

ISO/IEC 15772:2003

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ISO/IEC 15772:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Common Information additional network feature

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ISO/IEC 15991:2003

ISO/IEC 15991:2003

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ISO/IEC 15991:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Priority Interruption and Call Priority Interruption Protection supplementary services

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ISO/IEC 15992:2003

ISO/IEC 15992:2003

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ISO/IEC 15992:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Priority Interruption and Call Priority Interruption Protection supplementary services

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ISO/IEC 17876:2003

ISO/IEC 17876:2003

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ISO/IEC 17876:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Private User Mobility (PUM) - Registration supplementary service

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ISO/IEC 17878:2003

ISO/IEC 17878:2003

Active Most Recent

ISO/IEC 17878:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Private User Mobility (PUM) - Call handling additional network features

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