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E.251 : Old system for accounting in international telephony

Recommendation E.251

E.251 was an alias name of ITU-T D.151. Only this alias name was suppressed. ITU-T D.151 remains valid
Superseded and Withdrawn components
Number
 Title Status
E.251 (11/88)
  		Old system for accounting in international telephony  
E.251 was an alias name of ITU-T D.151. Only this alias name was suppressed. ITU-T D.151 remains valid 		Withdrawn

 

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