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ITU-T

 

Odporúčania:

E.164 : The international public telecommunication numbering plan

E.168 : Application of E.164 numbering plan for UPT

 

Medzinárodné číslovacie zdroje pod správou ITU

International Numbering Resources

                                                           ENUM

 

Focus Group on Identity Management (FG IdM)  3.1.2007 nové