Information technology. Protocol for providing the connectionless-mode network service - Provision of the underlying service by ISDN circuit-switched B-channels Ingestion-build-93833 ForewordIntroduction

ForewordIntroduction

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Information technology. Protocol for providing the connectionless-mode network service - Provision of the underlying service by ISDN circuit-switched B-channels Ingestion-build-93833 ForewordIntroduction1 Scope This Recommendation International Standard specifies the way in which the underlying service assumed by the protocol defined by ITU T Rec. X. 233 ISO IEC 8473 1 is provided by a subnetwork that conforms to Recommendation Q. 931 through the operation of a Subnetwork Dependent Convergence Function (SNDCF) as described in ISO IEC 8648. This Recommendation International Standard also provides the PICS proforma for this protocol, in compliance with