Historical
ANSI T1.615-1992 (R2004)
Digital Subscriber Signaling System No. 1 DSS1 Layer 3 Overview
The Digital Subscriber Signaling System No.1 (DSS1) is a suite of protocols that provides the means for users to invoke the full range of services and capabilities available from the Integrated Services Digital Network (ISDN). The structure of DSS1 is consistent with the seven-layer model described in CCITT Recommendation I.320. The complete suite of Layer 3 DSS1 protocols encompasses a set of several standards, each one addressing its own aspect of the suite. This standard provides an overview of DSS1 Layer 3 functions and protocols. It also provides a list of the standards in which the individual aspects of the SDD1 Layer 3 suite are defined.
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