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• ITU-T Rec. Q.764 (1988)
• 1 General
  • 1.1 Relationship with other Recommendations
  • 1.2 Numbering (see Recommendations E.163, E.164)
  • 1.3 Address signalling
  • 1.4 Basic procedures
  • 1.5 Signalling methods
  • 1.6 Layout of Recommendation Q.764
  • 1.7 Interworking with other signalling systems or user parts
• 2 Basic call control and signalling procedures
  • 2.1 Successful call set-up
  • 2.2 Unsuccessful call set-up
  • 2.3 Normal call release
  • 2.4 Transfer of user-to-user information
  • 2.5 Suspend, resume
  • 2.6 Delayed release (national option)
  • 2.7 In-call modification
  • 2.8 Echo control procedure
  • 2.9 Network features
  • 2.10 Abnormal conditions
  • 2.11 ISDN user part signalling congestion control
  • 2.12 Automatic congestion control
  • 2.13 Unequipped circuit identification code message (national option)
• 3 End-to-end signalling
  • 3.1 Introduction
  • 3.2 Pass-along method
  • 3.3 SCCP method
  • 3.4 Chaining of ISDN user part end-to-end signalling connections
  • 3.5 Use of the Protocol Control Indicator (PCI)
  • 3.6 Operation of the pass-along method
  • 3.7 Operation of the SCCP method - connectionless services
  • 3.8 Operation of the SCCP method - connection-oriented service
  • 3.9 Interface elements between ISDN user part and SCCP (embedded transfer)
• ANNEX A – Timers used in Recomendation Q.764
• ANNEX B – State transition diagrams
• B.1 General
• B.2 Drafting convention
• B.3 Abbreviations, timers and primitives
• B.4 State transition diagrams and SDL diagrams
• APPENDIX I – Contents of the interface elements between the ISDN user part and the SCCP
• I.1 Contents of the REQUEST type 1
• I.2 Contents of the REQUEST type 2
• I.3 Contents of the REPLY