1 Scope
2 References
3 Definitions
4 Overview of the Recommendation
4.1 Call indication
4.2 Call menu/Joint menu exchange
5 Coding format
5.1 Category octets
5.2 Extension octets
6 Code tables
6.1 Call functions
6.2 Modulation modes
6.3 PCM Modem availability
6.4 Protocols
6.5 PSTN access
6.6 Non-standard facilities
7 Descriptions of signals
7.1 Function indicator signal CI
7.2 Modified answer tone ANSam
7.3 The Call Menu signal CM
7.4 The Joint Menu signal JM
8 Data session start-up procedure
8.1 Start-up procedure in the call DCE
8.1.1 Call signal transmission
8.1.2 Call menu transmission
8.2 Start-up procedure in the answer
DCE
8.2.1 ANS transmission
8.2.2 ANSam transmission
8.2.3 JM transmission
9 DTE-DCE
interchange circuits
10 Compatibility