CONTENTS

 1     Scope
 2     References
 3     Definitions
 4     Abbreviations
 5     Test procedures and laboratory set-up
        5.1     DSL operation with splitters
                  5.1.1     Laboratory set-up
                  5.1.2     Crosstalk test
                  5.1.3     Impulse noise test
                  5.1.4     POTS interference test
        5.2     DSL operation without a splitter at the ATU-R
                  5.2.1     Laboratory set-up
                  5.2.2     Crosstalk test
                  5.2.3     Impulse noise test
                  5.2.4     POTS interference test
        5.3     POTS QOS testing
                  5.3.1     Telephone circuitry
                  5.3.2     Test conditions
                  5.3.3     Summary of test procedure
 6     Test loops
        6.1     Local loop configurations
                  6.1.1     North American test loops
                  6.1.2     European local test loops
                  6.1.3     Test loops in an environment coexisting with TCM-ISDN DSL
        6.2     In-home wiring models
                  6.2.1     In-home wiring model #1
                  6.2.2     In-home wiring model #2: Daisy Chain 4-conductor, 24 AWG, non-paired station wire
                  6.2.3     In-home wiring model #3: Star – 152.4 m (500 ft), 4-pair Category 3 wire
                  6.2.4     In-home wiring model for TCM-ISDN DSL environment
 7     Power spectral density of crosstalk disturbers
        7.1     Simulated DSL PSD and induced NEXT
        7.2     Simulated HDSL PSD and induced NEXT
        7.3     Simulated T1 line PSD and induced NEXT
        7.4     Simulated G.992.1 downstream PSD and induced NEXT and FEXT
                  7.4.1     FEXT
                  7.4.2     NEXT
        7.5     Simulated G.992.1 upstream PSD and induced NEXT and FEXT
                  7.5.1     FEXT
                  7.5.2     NEXT
        7.6     Simulated G.992.2 downstream NEXT and FEXT
                  7.6.1     FEXT
                  7.6.2     NEXT
        7.7     Simulated G.992.2 upstream NEXT and FEXT
                  7.7.1     FEXT
                  7.7.2     NEXT
        7.8     ETSI A, ETSI B and Euro-K crosstalk
        7.9     Power spectral density of crosstalk disturbers in an environment coexisting with TCM-ISDN DSL
                  7.9.1     Crosstalk disturber type
                  7.9.2     Crosstalk test parameters
                  7.9.3     Simulated TCM-ISDN DSL PSD and induced NEXT and FEXT
                  7.9.4     Simulated HDSL PSD and induced NEXT
                  7.9.5     Simulated ADSL downstream PSD and induced NEXT and FEXT
                  7.9.6     Simulated ADSL upstream PSD and induced NEXT and FEXT
 8     Characteristics of impulse noise waveforms
 9     Phone model structures for testing DSL systems without a splitter at the ATU-R
        9.1     Off-hook phone model #1
        9.2     Off-hook phone model #2
        9.3     On-hook phone model
Annex A – Primary constants of polyethylene-insulated cable (PIC)