ADC HDSL4 Manual do Utilizador descarregar pdf (Página 29)

Table 18: Maintenance Test Patterns B8ZS Line Code Standard Spans

Required Tests General Information Parameters

QRSS

1 five minute test

test pattern 0 errors

1 in 8

1 two minute test

test pattern 0 errors

All Ones

1 two minute test

test pattern 0 errors

All Zeros test pattern to check for B8ZS line code 0 errors

Bridged Tap (non HDSL

span only)

21 test patterns

test run on copper portion of spans only

when errors are detected on other stress

patterns, when there is a chronic trouble,

or when a pair change is made

0 errors

AT&T Practice ATT-TP-000-000-006

Issue 1, 08/25/06

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ADC HDSL4 Manual do Utilizador Página 29