EN 300 778-2 : 1.2.1
Current
The latest, up-to-date edition.
ACCESS AND TERMINALS (AT); ANALOGUE ACCESS TO THE PUBLIC SWITCHED TELEPHONE NETWORK (PSTN); PROTOCOL OVER THE LOCAL LOOP FOR DISPLAY AND RELATED SERVICES; TERMINAL EQUIPMENT REQUIREMENTS; PART 2: OFF-HOOK DATA TRANSMISSION
Hardcopy , PDF
English
Intellectual Property Rights
Foreword
1 Scope
2 References
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Physical layer requirements
4.1 Loop state
4.2 Data transmission
4.3 Timer requirements
4.4 Data signals
5 Datalink layer
5.1 Channel seizure
5.2 Mark signal
5.3 Message type
5.4 Message length
5.5 Checksum
5.6 Incorrect checksum
6 Presentation layer - message interpretation
7 Safety
8 ElectroMagnetic Compatibility (EMC)
History
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