DIN EN 300207-4:2000-10
Отменен
Integrated Services Digital Network (ISDN) - Diversion supplementary service; digital Subscriber Signalling System No. one (DSS1) protocol - 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 300207-4 V 1.2.4 (2000-03) as German version)
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