• I.S. EN 300 182-4:2001

    INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - ADVICE OF CHARGE (AOC) 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

    National Standards Authority of Ireland

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