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DIN EN 300369-4:2002-12

Действует
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Explicit Call Transfer (ECT) supplementary service - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 300369-4 V 1.3.1 (2002-05) as German Standard) — 1 стр.
ICS
33.080 Integrated Services Digital Network (ISDN) / Цифровая сеть связи с интеграцией служб (ISDN)