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Transport aspects                                              2


            3.2.43  vectored  group:  The  set  of  lines  over  which  transmission  from  the  DPU  is  eligible  to  be
            coordinated by pre-coding (downstream vectoring), or over which reception at the distribution point (DPU)
            is  eligible  to  be  coordinated  by  post-cancellation  (upstream  vectoring),  or  both.  Depending  on  the
            configuration  of  the  vectored  group,  downstream  vectoring,  upstream  vectoring,  both  or  none  may  be
            enabled.


            4       Abbreviations and acronyms
            This Recommendation uses the following abbreviations and acronyms:

            ACK            Acknowledgement
            ACTATP         Actual Aggregate Transmit Power

            ADSL2          Asymmetric Digital Subscriber Line transceivers 2
            ADSL2plus      ADSL2 – extended bandwidth
            AF             Assured Forwarding
            AN             Access Node

            ANDR           Aggregate Net Data Rate
            AR             Automatic Repeat

            ASCII          American Standard Code for Information Interchange
            ATA            Analogue Telephone Adapter

            ATTETR         Attainable Expected Throughput
            ATTNDR         Attainable Net Data Rate

            BAT            Battery operation
            BE             Best Effort

            BER            Bit Error Ratio
            BLT            Bit-Loading Table
            CE             Cyclic Extension

            CL             Capabilities List
            CLR            Capabilities List Request

            CP             Cyclic Prefix
            CP             Customer Premises
            CRC            Cyclic Redundancy Check

            DECT           Digital Enhanced Cordless Telecommunications
            FT             Discrete Fourier Transform

            DGL            Dying Gasp power Loss
            DMT            Discrete Multitone
            DOI            Discontinuous Operation Interval

            DPR            DTU Payload Rate
            DPU            Distribution Point Unit

            DRA            Dynamic Resource Allocation
            DRR            Dynamic Resource Report

            DS             Downstream

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