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DIN ETS 300185-5:1997-09

Отменен
Integrated Services Digital Network (ISDN) - Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network; English version ETS 300185-5:1996
Corrigendum to DIN ETS 300185:1994-04 (ETS 300185:1993/Corrigendum:1994)