1 Scope
1.1 General
1.2 Use of bearer capabilities
1.3 Protocol architecture
2
ISDN B-channel circuit-switched
mode (DTE-DTE communication)
2.1 Protocol set
2.2 Application rules
3
ISDN B-channel packet-switched
mode (DTE-DCE communication)
3.1 Protocol set
3.2 Application rules
4
Support of the OSI-network service
4.1 Rationale for considering the OSI-NS
4.2 CCITT Recommendations and ISO standards
4.3 Requirements for the OSI-NS
5
Additional X.25 optional user
facilities
5.1 Categories of additional functions
5.2 Functions
6
Interactions between the D-channel
and B-channel
7
Supplementary services
8
Terminal response time
9
Synchronization
10 Higher layer protocols
10.1 Group 4 facsimile
10.2 Teletex
10.3 Videotex
Annex A – Procedures for
connection establishment, connection release and information transfer
Annex B – ISDN D-channel
packet-switched mode (DTE-DCE communication)
Annex C – Procedures for
B-channel negotiation of layer 2 parameters for telematic terminals
Annex D – SDL diagram for
link set up for SABM/SABME procedures
Annex E – SDL diagram for
link set up to a T.90 compatible terminal for XID procedure
Appendix I – Facsimile terminals in the ISDN
Appendix II– Optional usage of the T.70 NL protocol
Appendix III – Service definitions and state transition
diagrams for the data link layer within the B-channel (CS mode)
Appendix IV– Possible model for telematic endsystems taking into account
the D-channel/B-channel coordination function
Appendix V– Rate adaptation
function
Appendix VI– Recommended combinations of parameter values to ensure optimum
throughput
Appendix VII – Alphabetical list of abbreviations.