Service Units - Mitel MiVoice Business Troubleshooting Manual

Troubleshooting Guide

SERVICE UNITS

SYMPTOM
Network Service Units
NSU not functioning correctly.
NSU fails to come up after
upgrade or new installation
(Both the red and amber
LEDs, or just the amber LED,
are alternating between
L0/L1).
The LEDs are flashing green
and amber for more than 30
minutes during an NSU
upgrade.
NSU fails to come up after
upgrade or new installation.
NSU continues to reset on a
regular interval and/or the
LEDs on L0 and L1 continue in
alternating flash cycle longer
than 30 minutes.
NSU fails to load after upgrade
or install with "Unexpected
database error"
NSU or PRI card fail to load
after upgrade or database
restore.
NSU keeps resetting with no
IMAT db error message.
44
Table 10: Service Unit Troubleshooting
PROBABLE CAUSE
Issue with external equipment.
Faulty fiber connection between
NSU and controller.
Programming error.
Automatic NSU upgrade is in
progress.
Corrupted NSU software.
NSU flash is corrupted.
Database version is unsupported
(incompatible).
NSU and PRI cards fail to load
because the database version
does not match the current
software load on the card.
No IMAT database is saved to the
NSU (PRI/QSIG).
CORRECTIVE ACTION
Check external equipment.
Fix the fiber connection, and ensure that
the LEDs of both FIMs are solid green.
Check the programming in the following
forms:
• MSDN/DPNSS/DASS2 Trunk Circuit
Descriptor Assignment
• Miscellaneous Assignment (for
NSU-BRI only)
• Link Descriptor Assignment.
Wait 15–20 minutes for the NSU upgrade
to complete.
CAUTION: Do not power
down when the amber LED
is alternating between
L0/L1. Powering down the NSU may
corrupt the NSU software.
Refer to Technical Bulletin 58004932 for
information on flashing the NSU.
Refer to Mitel Knowledge Base article
04-1000-00026_2 for instructions.
Refer to Mitel Knowledge Base article
04-5115-00002 for instructions.
Refer to Mitel Knowledge Base article
05-5173-00022
Use IMAT to save the corresponding
database to NSU (PRI/QSIG).
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