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ÖNORM EN 300356-34 V 3.0.5:2000-12

Действует
Integrated Services Digital Network (ISDN) - Signalling System No.7 - ISDN User Part (ISUP) version 3 for the international interface - Part 34: Protocol Implementation Conformance Statement (PICS) proforma specification for supplementary services
ÖNORM EN 300356-34 V 3.0.5:2000-12
Действует