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ETSI ETS 300 196-1/A1
M00000343
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ETSI ETS 300 196-1/A1 Amendment 1 to - Integrated Services Digital Network (ISDN); Generic functional protocol for the support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification
Amendment by European Telecommunications Standards Institute, 05/01/1995
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