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ETSI ETS 300 058-4

M00000664

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ETSI ETS 300 058-4 Integrated Services Digital Network (ISDN); Call Waiting (CW) 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

standard by European Telecommunications Standards Institute, 05/01/1997

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Conformance test specification for the DSS1 protocol for the Call Waiting (CW) Supplementary service. - including PIXIT proforma