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Q.769.1 : Signalling system No. 7 - ISDN user part enhancements for the support of number portability

Recommendation Q.769.1

In force components
Number
Title Status
Q.769.1 (12/99)
 
Signalling system No. 7 - ISDN user part enhancements for the support of number portability   In force

 

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Updated : 2006/05/25