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U.7 : Numbering schemes for automatic switching networks

Recommendation U.7

In force components
Number
Title Status
U.7 (03/93)
 
Numbering schemes for automatic switching networks   In force
 
 
Superseded and Withdrawn components
Number
Title Status
U.7 (11/88)
 
Numbering schemes for automatic switching networks   Superseded

 

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Updated : 2009/10/30