ITU-T D.220-1989 标准详情
- 标准号：ITU-T D.220-1989
- 中文标题：
- 英文标题：Charging and Accounting Principles to Be Applied to International Circuit Mode Demand Bearer Services Provided over the Integrated Services Digital Network (ISDN) - General Tariff Principles - Charging and Accounting of International Telecommunicatio
- 标准类别：国际电信联盟标准
- 发布日期：1989-01-01
