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M00001678
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ETSI EN 300 745-3
Integrated Services Digital Network (ISDN); Message Waiting Indication (MWI) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the userstandard by European Telecommunications Standards Institute, 09/01/1998
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