Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ITU-T OB.1222:2021
• Năm ban hành / Publication date: 2001
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Operational Bulletin No - 1222 (15 - VI - 2021)
• Số trang / Page: 27
• Phạm vi áp dụng / Scope of standard: GENERAL INFORMATION Lists annexed to the ITU Operational Bulletin: Note from TSB Approval of ITU-T Recommendations Assignment of Signalling Area/Network Codes (SANC): Note from TSBInternational Identification Plan for Public Networks and Subscriptions: Note from TSB Telephone Service: Ghana (National Communications Authority (NCA), Accra) Iran (Islamic Republic of) (Communications Regulatory Authority (CRA), Tehran) Issuer Identifier Number (IIN): Note from TSB Other communication: Austria Service Restrictions Call-Back and alternative calling procedures (Res 21 Rev PP-06) AMENDMENTS TO SERVICE PUBLICATIONS List of Coast Stations and Special Service Stations (List IV) List of Issuer Identifier Numbers for the International Telecommunication Charge Card Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions List of ITU Carrier Codes List of Signalling Area/Network Codes (SANC) List of International Signalling Point Codes (ISPC) National Numbering Plan