• ITU-T RECOMMENDATION i.254.2 (1988)
  • 2 I.254.2 - Three Party Service
    • 2.1 Definition
    • 2.2 Description
    • 2.3 Procedures
    • 2.4 Network capabilities for charging
    • 2.5 Interworking Requirements
    • 2.6 Interaction with other supplementary services
    • 2.7 Dynamic description