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R.57 : Standard limits of transmission quality for planning code-independent international point-to-point telegraph communications and switched networks using 50-baud start-stop equipment

Recommendation R.57

In force components
Number
Title Status
R.57 (11/88)
 
Standard limits of transmission quality for planning code-independent international point-to-point telegraph communications and switched networks using 50-baud start-stop equipment   In force

 

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Updated : 2003/02/10