Manually Isolating And Correcting Faults - Avaya Nortel Communication Server 1000 Reference

NT6D80 MSDL card

Manually isolating and correcting faults

Problems are due to configuration errors that occur during installation or hardware faults
resulting from component failure during operation. See
for more information about problem symptoms and required responses.
Isolate MSDL faults using the diagnostic tools described below:
1. Observe and list the problem symptoms; for example, a typical symptom is a
2. If the LED flashes three times but the card does not enable, verify that the card is
3. Check that the address is unique; no other card in the system can be physically set
4. If installation is correct and no address conflict exists, refer to
5. If the MSDL still does not operate correctly, contact your Nortel representative.
Newly installed MSDL cards
Problems that occur during MSDL card installation usually result from improperly installed,
incorrectly addressed, or faulty cards.
If the LED on a newly installed MSDL does not flash three times after insertion, wait 5 minutes,
then remove and reinsert. If the LED still does not flash three times, the card is faulty.
Previously operating MSDL cards
Problems that occur during normal operation usually result from faulty cards. Follow these
steps to evaluate the situation:
1. Use the STAT MSDL x command to check MSDL card status. See
2. If the card is manually disabled, try to enable it using ENL MSDL x.
3. If the card is disabled by the system, disable it manually with DIS MSDL x. See
4. Invoke self-testing with the SLFT MSDL x command.
340 Circuit Card Reference
permanently lit LED.
installed in a proper slot.
to the same device number as the MSDL.
cards on page 340 or
MSDL status on page 339.
MSDL on page 339 If this fails, perform self-testing as described in step 4.
Disabling the MSDL on page 339
page 339 If self-tests fail, replace the card. If self-tests pass, try to enable the card
again, as in step 2. If the card does not enable, note the message output to the TTY
and follow the recommended action.
Comments? infodev@avaya.com
Previously operating MSDL cards
Symptoms and actions
Newly installed MSDL
on page 340.
Self-testing the MSDL
on page 341
Displaying
Enabling the
on
July 2011