ETS 300 778-1 : 20001
Current
The latest, up-to-date edition.
PUBLIC SWITCHED TELEPHONE NETWORK (PSTN); PROTOCOL OVER THE LOCAL LOOP FOR DISPLAY AND RELATED SERVICES; TERMINAL EQUIPMENT REQUIREMENTS; OFF-LINE DATA TRANSMISSION
Hardcopy , PDF
English
Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Physical layer requirements
4.1 General requirements
4.2 Service dependent requirements
5 Datalink layer - data reception
5.1 Channel seizure
5.2 Mark signal
5.3 Message type
5.4 Message length
5.5 Checksum
6 Presentation layer - message interpretation
6.1 Call set-up message
6.2 Message waiting indicator message
6.3 Advice of charge message
7 Safety
8 ElectroMagnetic Compatibility (EMC)
Annex A (normative): DTMF based subscriber line
protocol
Annex B (normative): Test configuration
Annex C (normative): Test requirements
Annex D (informative): Parameter coding
Annex E (informative): Data format
Annex F (informative): IRA (ITU-T Recommendation
T.50 [3]) Character Coding; Basic Code
History
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