Private Telecommunication Network (PTN); specification, functional models and information flows; call transfer supplementary service; English version ETS 300260:1993
€77.20
Public Switched Telephone Network (PSTN) - Subscriber line protocol over the local loop for display (and related) services - Part 1: On hook data transmission; English version ETS 300659-1:1997
€84.58
Public Switched Telephone Network (PSTN) - Protocol over the local loop for display and related services - Terminal Equipment requirements - Part 1: Off-line data transmission; English version ETS 300778-1:1997
€105.42
Public Switched Telephone Network (PSTN) - Subscriber line protocol over the local loop for display (and related) services - Part 2: Off-hook data transmission; English version ETS 300659-2:1997
€41.78
Public Switched Telephone Network (PSTN) - Protocol over the local loop for display and related services; Terminal equipment requirements - Part 2: On-line data transmission; English version ETS 300778-2:1998
€56.17
Private Integrated Services Network (PISN) - Specification, functional models and information flows - Advice of Charge (AoC) supplementary services (ISO/IEC 15049 (1997), modified) (Endorsement of the English version EN 301254 V 1.1.1 (1998-10) as German standard)
€16.45
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Message Waiting Indication (MWI) supplementary services (ISO/IEC 15506 (1997), modified) (Endorsement of the English version EN 301255 V 1.1.1 (1998-10) as German standard)
Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call interception additional network feature (ISO/IEC 15053 (1997), modified) (Endorsement of the English version EN 301256 V 1.1.1 (1998-10) as German standard)
Private Integrated Services Network (PISN) - Specification, functional models and information flows - Recall supplementary service (ISO/IEC 15051 (1997), modified) (Endorsement of the English version EN 301257 V 1.1.1 (1998-10) as German standard)
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Recall supplementary service (ISO/IEC 15052 (1997), modified) (Endorsement of the English version EN 301258 V 1.1.1 (1998-10) as German standard)
Private Integrated Services Network (PISN) - Specification, functional models and information flows - Message Waiting Indication (MWI) supplementary service (ISO/IEC 15505 (1997), modified) (Endorsement of the English version EN 301260 V 1.1.1 (1998-10) as German standard)
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Advice of Charge (AoC) supplementary services (ISO/IEC 15050 (1997), modified) (Endorsement of the English version EN 301264 V 1.1.1 (1998-10) as German standard)
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call interception additional network feature (ISO/IEC 15054 (1997), modified) (Endorsement of the English version EN 301265 V 1.1.1 (1998-10) as German standard)
Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call priority interruption and call priority interruption protection supplementary services (ISO/IEC 15991 (1998), modified) (Endorsement of the English version EN 301655 V 1.1.1 (1999-08) as German standard)
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call priority interruption and call priority interruption protection supplementary services (ISO/IEC 15992 (1998), modified) (Endorsement of the English version EN 301656 V 1.1.1 (1999-08) as German standard)
