ATIS T1.607-2000 (R2004)
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Integrated Services Digital Network (ISDN) – Layer 3 Signaling Specification for Circuit Switced Bearer Service for Digital Subscriber Signaling System Number 1(DSS1)
This standard specifies the procedures for the establishing, maintaining, and clearing of network connection at the Integrated Services Digital Network (ISDN) user-network interface for the support of circuit switched calls. These procedures are defined in terms of messages exchange over the D-channel.
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