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  4. Standard "UNE-EN 300121V1.2.1"
Standard UNE-EN 300121V1.2.1 1.7.2021 preview

UNE-EN 300121V1.2.1

Integrated Services Digital Network (ISDN);Application of the ISDN User Part (ISUP) of ITU-T Signalling System No. 7 (SS7) for international ISDN interconnections (ISUP version 1) Amendment 1: International Emergency Preference Scheme (IEPS) service [ITU-T Recommendation Q.767Amendment 1 (2002), modified] (Endorsed by Asociación Espanola de Normalización in July of 2021.)

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STANDARD published on 1.7.2021


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The information about the standard:

Designation standards: UNE-EN 300121V1.2.1
Publication date standards: 1.7.2021
SKU: NS-1110440
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Category: Technical standards UNE

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Integrated Services Digital Network (ISDN)

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