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U.15 : Interworking rules for international signalling systems according to Recommendations U.1, U.11 and U.12  

Recommendation U.15

In force components
Number
 Title Status
U.15 (03/93)
  		Interworking rules for international signalling systems according to Recommendations U.1, U.11 and U.12   In force
 
 
Superseded and Withdrawn components
Number
 Title Status
U.15 (11/88)
  		Interworking rules for international signalling systems according to Recommendations U.1, U.11 and U.12   Superseded

 

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