Integrated Services Digital Network (ISDN) - Three Party (3PTY) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user
Edition 2001-05-01

Integrated Services Digital Network (ISDN) - Three Party (3PTY) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part 5: Test Suite Structure and Test Purpose (TSS&TP) specification for the network
Edition 2001-05-01

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Edition 1995-04-01

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Conformity assessment - General requirements for third-party marks of conformity (ISO/IEC 17030:2021); German and English version EN ISO/IEC 17030:2021
Edition 2021-12

Intelligent transport systems - eCall - Operating requirements for third party support; German version EN 16102:2011
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Integrated Services Digital Network (ISDN). Three-party (3PTY) supplementary service. Digital subscriber signalling system no one (DSS1) protocol. Part 1: protocol specification
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Edition 2021-06-15

Conformity assessment. General requirements for third-party marks of conformity
Edition 2021-10-08

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Edition 2004