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• ITU-T RECOMMENDATION I.251.6 (1988)
• 6 I.251.6 - Connected Line Identification Restriction
  • 6.1 Definition
  • 6.2 Description
  • 6.3 Procedures
  • 6.4 Network capabilities for charging
  • 6.5 Interworking requirements
  • 6.6 Interaction with other supplementary services
  • 6.7 Dynamic description