Grade-of-service and new performance criteria under failure conditions in international telephone exchanges
国际电话交换机故障条件下的服务等级和新性能标准

1993-03-12

Maintenance organization for the wholly digital international automatic and semi-automatic telephone service
全数字国际自动和半自动电话业务维护组织

1988-11-25

Error performance objectives for real digital radio-relay links forming part of the high-grade portion of international digital connections at a bit rate below the primary rate within an integrated services digital network
在综合业务数字网络中 以低于主要速率的比特率构成国际数字连接高级部分的真实数字无线电中继链路的误码性能目标

1997-09-30