ADC HDSL4 Manual do Utilizador descarregar pdf (Página 26)

Automated Testing and Analysis System (ATAS) is the automated system that will populate test results in the log of

WFA/C. These test results are used for trouble sectionalization when a trouble is not chronic or intermittent. See

Section 5, ATAS testing.

Maintenance testing procedures will vary depending on the type of trouble reported. The initial test pattern and section-

alization strategies used for trouble isolation should be at the discretion of the tester.

Special Note: Any trouble report that is a chronic trouble or “intermittent” errors reported, must utilize Table 5

, Extended Test Pattern Parameters. A circuit does not have to be intermittent or chronic to view Performance

Monitoring(PM) data.

Current status and history PM data is available from both the Adtran and ADC/ Pairgain HDSL units. If no trouble is

found, the CO or outside field technician can utilize current status and history from the HDSL units to help sectionalize

the trouble.

Other PM data may be available depending on equipment used in circuit design. See local practices for PM retrieval on

specific equipment types.

After the trouble has been isolated and repaired, the following tests should be performed:

Table 16: Maintenance Test Patterns AMI Line Code

Required Tests General Information Parameters

QRSS

1 five minute test

test pattern 0 errors

3 in 24

1 two minute test

test pattern 0 errors

All Ones

1 two minute test

test pattern 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 26