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ÖNORM EN 301062-1 V 1.2.3:1999-12

Действует
Integrated Services Digital Network (ISDN) - Signalling System No.7 - Support of Virtual Private Network (VPN) applications with Private network Q reference point Signalling System number 1 (PSS1) information flows - Part 1: Protocol specification [ITU-T Recommendations Q.765.1 and Q.699.1, modified]