ITU-T E.550-1988 标准详情
- 标准号：ITU-T E.550-1988
- 中文标题：国际电话交换在故障情况下的服务等级和新的性能规则
- 英文标题：grade-of-service and new performance criteria under failure conditions in international telephone exchanges - telephone network and isdn - quality of service, network management and traffic engineering study group ii; 12 pp
- 标准类别：国际电信联盟标准
- 发布日期：
