美利体育登录入口官网:ITU-T Q.951-1993
使用DSS 1数字标识补充业务的第3阶段描述: 条款3-主叫线识别提供 条款4-主叫线识别限制
Stage 3 Description for Number Identification Supplementary Services Using DSS 1 Clause 3 - Calling Line Identification Presentation (CLIP) Clause 4 - Calling Line Identification Restriction (CLIR) Clause 5 - Connected Line Identification Presentation (C