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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

OENORM EN 300659-1 V 1.3.1
Access and Terminals (AT) - Analogue access to the Public Switched Telephone Network (PSTN) - Subscriber line protocol over the local loop for display (and related) services - Part 1: On-hook data transmission

Edition 2001-04-01

Original language English

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

OENORM EN 300659-1 V 1.3.1 Access and Terminals (AT) - Analogue access to the Public Switched Telephone Network (PSTN) - Subscriber line protocol over the local loop for display (and related) services - Part 1: On-hook data transmission

Want to learn more?

OENORM EN 300659-1 V 1.3.1
Access and Terminals (AT) - Analogue access to the Public Switched Telephone Network (PSTN) - Subscriber line protocol over the local loop for display (and related) services - Part 1: On-hook data transmission