1 Scope
2
References
3
Definitions
4
Operational requirements
5
Connecting in text telephone mode including procedures for interworking
with the installed base of existing text telephones
5.1 Automoding originating
5.2 Automoding answering
5.3 Automoding monitor mode
6
Multi-mode text telephony
6.1 Simultaneous Voice and Text telephony (SVT)
Annex A – 5-bit operational mode
A.1 Mode of operation
A.2 Modulation
A.3 Probe
A.4 Character conversion
Annex B – DTMF operational mode
B.1 Mode of operation
B.2 Character conversion
Annex C – EDT operational mode
C.1 Mode of operation
C.2 Modulation
C.3 Characters in the EDT mode
Annex D – Bell 103 mode
D.1 Mode of operation
D.2 Modulation
Annex E – V.23 Videotex terminals
E.1 Minitel terminals
E.1.1 Mode of operation
E.1.2 Minitel "Dialogue" terminal
E.1.3 Minitel "Normal" terminal
E.2 Prestel terminals
Annex F – V.21 text telephone mode
F.1 Mode of operation
F.2 Modulation
F.3 Channel selection
F.4 Character code and framing
F.5 Presentation control
F.6 Usage conventions
Annex G – V.18 text telephone mode
G.1 Mode of operation
G.2 Presentation protocol for V.18 mode
G.3 Framing and transmission
Appendix I – Representative ordering of automoding
Appendix II – Recommended common procedures for terminals using the V.18 DCE
II.1 Line status display
II.2 Connect mode
Appendix III – Connection procedures for terminals including V.18 functionality
III.1 V.18 connection procedures without V.8 bis
III.2 V.8 bis connection
procedures