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national number (NN)

The ITU standard X.121 standardizes the international telephone numbers for public and private data networks and telephone networks

.

Data field for National Number (NN) in X.121

Data field for National Number (NN) in X.121

As far as public data networks are concerned, the International Telecommunication Union

(ITU) has specified theInternational Data Number

(IDN). This network number can consist of the Data Country Code (DCC) and the National Number (NN). In this formation, the Data Country Code consists of three digits and the National Number of up to 11 digits, starting with the 4th digit of the Data Network Identification Code (DNIC).

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Englisch: national number - NN
Updated at: 28.10.2011
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Translations: DE