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  4. Standard "UNE-ETS 300403-1ED1"
Standard UNE-ETS 300403-1ED1 1.8.2022 preview

UNE-ETS 300403-1ED1

Integrated Services Digital Network (ISDN);Digital Subscriber Signalling System No. one (DSS1) protocol;Signalling network layer for circuit-mode basic call control;Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified] (Endorsed by Asociación Espanola de Normalización in August of 2022.)

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STANDARD published on 1.8.2022


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The information about the standard:

Designation standards: UNE-ETS 300403-1ED1
Publication date standards: 1.8.2022
SKU: NS-1127159
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Category: Technical standards UNE

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Integrated Services Digital Network (ISDN)

Latest update: 2026-09-04 (Number of items: 2 300 131)
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