ITU-T Rec. Q.81.3 – NUMBER IDENTIFICATION SUPPLEMENTARY SERVICES...
3 Calling Line Identification Presentation (CLIP)
3.1 General
3.2 Description
3.3 Derivation of a functional model
3.4 Information flow diagrams
3.5 SDL diagrams for functional entities
3.6 Functional entity actions
3.7 Allocation of functional entities to physical location