ITU-T Q.2951

ITU-T Q.2951

Stage 3 description for number identification supplementary services using B-ISDN Digital Subscriber Signalling System No. 2 (DSS 2) - Basic call - Clause 1: Direct Dialling-In (DDI); Clause 2: Multiple Subscriber Number (MSN); Clause 3: Calling Line Identification Presentation (CLIP); Clause 4: Calling Line Identification Restriction (CLIR); Clause 5: Connected Line Identification Presentation (COLP); Clause 6: Connected Line Identification Restriction (COLR); Clause 8: Sub-addressing (SUB)