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• CCITT Rec. Q.709 (11/1988) – HYPOTHETICAL SIGNALLING REFERENCE CONNECTION
• 1 Introduction
• 2 Requirements of networks served by the signalling connection
• 3 Hypothetical signalling reference connection components for link-by-link signalling
  • 3.1 General
  • 3.2 International component of hypothetical signalling reference connection
  • 3.3 National components of hypothetical signalling reference connection
• 4 Overall signalling delay for link-by-link signalling
• 5 Hypothetical signalling reference connection (HSRC) components for end-to-end signalling
  • 5.1 General
  • 5.2 International component of hypothetical signalling reference connection
  • 5.3 National components of hypothetical signalling reference connections
• 6 Overall signalling delay for end-to-end signalling
• 7 Remarks