Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ITU-T OB.1224:2021
• Năm ban hành / Publication date: 2001
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Operational Bulletin No - 1224 (15 - VII - 2021)
• Số trang / Page: 17
• Phạm vi áp dụng / Scope of standard: GENERAL INFORMATION Lists annexed to the ITU Operational Bulletin: Note from TSB Approval of ITU-T Recommendations Telephone Service: Senegal (Autorité de Régulation des Télécommunications et des Postes (ARTP), Dakar) South Sudan (National Communication Authority (NCA), Juba) Uganda (Uganda Communications Commission (UCC), Kampala) Service Restrictions Call-Back and alternative calling procedures (Res. 21 Rev. PP-06) AMENDMENTS TO SERVICE PUBLICATIONS Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptionsList of ITU Carrier Codes List of International Signalling Point Codes (ISPC) National Numbering Plan