ETSI PRETS 300 091-1991 综合业务数字网(ISDN).主叫线路识别表示(CLIP)和主叫线路识别限制(CLIR)补充业务功能性能力和信息流
Integrated Services Digital Network (ISDN); Calling Line Identification Presentation (CLIP) and Calling Line Identification Restriction (CLIR) Supplementary Services Functional Capabilities and Information Flows