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• ITU-T Rec. Q.773 (1988)
• 1 Introduction
• 2 Description conventions
• 3 Standard representation
  • 3.1 General message structure
  • 3.2 Tag
  • 3.3 Length of the Contents
  • 3.4 Contents
• 4 TCAP message structure
• 5 Transaction Portion
  • 5.1 Structure of the Transaction Portion
  • 5.2 Message Type Tag
  • 5.3 Transaction ID tags
  • 5.4 P-Abort Cause tag
  • 5.5 User Abort Information tag
  • 5.6 Component Portion tag
• 6 Component Portion
  • 6.1 Component type tag
  • 6.2 Component ID tag
  • 6.3 Operation Code tag
  • 6.4 Sequence and Set tags
  • 6.5 Error Code tag
  • 6.6 Problem Code
• ANNEX A – Specification of Transaction Capabilities in ASN
• APPENDIX I – Formats and encoding for the Unidirectional message
• I.1 Introduction
• I.2 Structure of theTransaction Portion
• I.3 Message type tag
• I.4 Transaction IDs
• I.5 Component Portion
• I.6 Specification of the Unidirectional message in ASN