ITU-T X.137-1989 标准详情
- 标准号：ITU-T X.137-1989
- 中文标题：
- 英文标题：Availability Performance Values for Public Data Networks When Providing International Packet-Switched Services - Data Communication Networks - Transmission, Signalling and Switching, Network Aspects, Maintenance and Administrative Arrangements Study
- 标准类别：国际电信联盟标准
- 发布日期：1989-01-01
