CONTENTS

 1     Scope
 2     Definitions
 3     Requirements
        3.1     Forward Data Channels (FDC)
        3.2     Reverse Data Channels (RDC)
Annex A - Digital broadband delivery system: Out-of-band transport – Mode A
        A.1     Introduction
        A.2     Acronyms
        A.3     References
        A.4     Out-of-band system specifications
        A.5     Physical layer specification
                  A.5.1     Physical layer For OOB transmission
                  A.5.2     Physical layer for return-path transmission
                  A.5.3     Extended practice for return-path transmission (Informative)
        A.6     Data link layer
                  A.6.1     Application PDU Processing
                  A.6.2     Link layer headers/trailers
                  A.6.3     Segmentation and reassembly
                  A.6.4     MAC information transport
                  A.6.5     MAC signalling messages
Annex B - Digital broadband delivery system: Out-of-band transport – Mode B
        B.1     Introduction
                  B.1.1     Revision history
                  B.1.2     Acronyms
                  B.1.3     References
        B.2     DAVIC out-of-band and upstream signalling
                  B.2.1     Downstream physical interface specification
                  B.2.2     Upstream physical interface specification
                  B.2.3     Media access control functionality