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 21411:2001

ISO/IEC 21411:2001

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ISO/IEC 21411:2001 Information technology - Telecommunications and information exchange between systems - Corporate telecommunication networks - Signalling interworking between QSIG and H.323 - Call diversion supplementary services

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ISO/IEC 21888:2001

ISO/IEC 21888:2001

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ISO/IEC 21888:2001 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Identification and Call Linkage Additional Network Feature

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ISO/IEC 21889:2001

ISO/IEC 21889:2001

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ISO/IEC 21889:2001 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Identification and Call Linkage Additional Network Feature

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ISO/IEC TR 21890:2001

ISO/IEC TR 21890:2001

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ISO/IEC TR 21890:2001 Information technology - Telecommunications and information exchange between systems - Interoperation of PISNs with IP networks

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ISO/IEC 20161:2001

ISO/IEC 20161:2001

Active Most Recent

ISO/IEC 20161:2001 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Use of QSIG at the C reference point between a PINX and an Interconnecting Network

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ISO/IEC 11582:2002

ISO/IEC 11582:2002

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ISO/IEC 11582:2002 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Generic functional protocol for the support of supplementary services - Inter-exchange signalling procedures and protocol

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ISO/IEC 21989:2002

ISO/IEC 21989:2002

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ISO/IEC 21989:2002 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Short message service

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ISO/IEC 21990:2002

ISO/IEC 21990:2002

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ISO/IEC 21990:2002 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Short message service

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ISO/IEC 21991:2002

ISO/IEC 21991:2002

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ISO/IEC 21991:2002 Information technology - Telecommunications and information exchange between systems - Corporate Telecommunication Networks - Signalling interworking between QSIG and H.323 - Call completion supplementary services

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ISO/IEC 13868:2003

ISO/IEC 13868:2003

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ISO/IEC 13868:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Name identification supplementary services

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ISO/IEC 13872:2003

ISO/IEC 13872:2003

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ISO/IEC 13872:2003 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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ISO/IEC 13873:2003

ISO/IEC 13873:2003

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ISO/IEC 13873:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Diversion supplementary services

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ISO/IEC 13874:2003

ISO/IEC 13874:2003

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ISO/IEC 13874:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Path Replacement additional network feature

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ISO/IEC 13865:2003

ISO/IEC 13865:2003

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ISO/IEC 13865:2003 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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ISO/IEC 13869:2003

ISO/IEC 13869:2003

Active Most Recent

ISO/IEC 13869:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Transfer supplementary service

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