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ÖNORM EN 302091-4 V 1.1.1:2000-12

Действует
Broadband Integrated Services Digital Network (B-ISDN) and Broadband Private Integrated Services Network (B-PISN) - Digital Subscriber Signalling System No. two (DSS2) and Broadband Inter-Exchange Signalling (B-QSIG) and Signalling System No. 7 (SS7) - Prenegotiation - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (incl. Diskette!!!)