ANSI T1.650-1995 Telekommunikation – Integrated Services Digital Network (ISDN) – Verwendung des Cause Information Element im Digital Subscriber Signaling System Number 1 (DSS1)
1995ANSI T1.650-1995 Telekommunikation – Integrated Services Digital Network (ISDN) – Verwendung des Cause Information Element im Digital Subscriber Signaling System Number 1 (DSS1)