ADTRAN 25 manual Time-Keeping Troubles, Voice Terminal and Wiring Troubles

MAINTENANCE

N o t e : For problems with administration equipment that is not connected on a dedicated basis, refer to the Terminal Operations Manual, 555-540-710.

Time-Keeping Troubles

Symptoms:

Clock doesn’t reflect current time or date.

Procedures:

1.Reset clock from SAT (see the Administration Manual). Clock has tolerance of plus or minus 3 minutes per month. Variances outside this range indicate a faulty clock and require replacement of the CPU/Memory CP. Time must be reset for Daylight Savings Time.

Voice Terminal and Wiring Troubles

Symptoms:

Intermittent voice terminal troubles.

Procedures:

1.Swap a known good terminal with the questionable terminal to determine if problem is localized to a single terminal. If local power is provided, check power supply.

2.if troubles do not persist, problem is localized to single terminal. Replace faulty terminal.

3.If good terminal does not work properly, fault is in wiring or circuit pack (CP).

4.Check other terminals connected to same CP. If other terminals are working properly, fault is probably in wiring. Swap wiring between Station Interconnect Panel and terminal to verify wiring problem. Check and clear any wiring problems.

5.If other terminals connected to same CP are not working properly, fault is probably in CP.

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