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DIN ETS 300141-2:1997-08

Отменен
Integrated Services Digital Network (ISDN) - Call Hold (HOLD) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification; English version ETS 300141-2:1996
Corrigendum to DIN ETS 300141:1992-11 (ETS 300141:1992/Corrigendum:1994)