ITU-T R.75 BIS-1988
国际电报电路中电码不相关的国际线段的维护测量

MAINTENANCE MEASUREMENTS OF CHARACTER ERROR RATE ON INTERNATIONAL SECTIONS OF INTERNATIONAL TELEGRAPH CIRCUITS


 

 

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标准号
ITU-T R.75 BIS-1988
发布
1988年
发布单位
国际电信联盟
 
 
引用标准
ITU-T R.51
适用范围
The CCITT,in view of Recommendations R.51 bis and R.54,considering(a) that,for the technical supervision of international telegraph circuits,it is necessary to make periodic character error rate measurements on their international sections when they are made up of two or more channels;(b) that certain Administrations consider it desirable to have available apparatus for making simple measurements automatically and periodically,giving an indication of the performance rating and transmitting an alarm when this rating exceeds the limits permitted for automatic switched channels.

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