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ETSI ETS 300 138-5

ETSI ETS 300 138-5

Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 5: Test Suite Structure and Test Purposes (TSS

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Conformance test specification for the DSS1 protocol for the Closed user group (CUG) Supplementary service. - including PIXIT proforma



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