ITU-T E.426-1988 标准详情
- 标准号：ITU-T E.426-1988
- 中文标题：对国际电话呼叫应监视的有效试呼的百分比的一般指导
- 英文标题：general guide to the percentage of effective attempts which should be observed for international telephone calls - telephone network and isdn quality of service, network management and traffic engineering study group ii 3 pp
- 标准类别：国际电信联盟标准
- 发布日期：
