Troubleshooting guide
Troubleshooting Guide
142
MWI lamp on ONS sets failing to 
light.
Message Waiting Lamp disabled 
in circuit descriptor and/or ONS 
CLASS/CLIP Message Waiting 
option incorrectly set.
Verify that the circuit is assigned an 
ONS/OPS Circuit Descriptor that has the 
Message Waiting Lamp field on set to 
“Yes.” Verify that CLASS/CLIP sets have 
a COS with the ONS CLASS/CLIP 
Message Waiting option set to “Yes” and 
that non-CLASS/CLIP sets have a CoS 
with the same option set to “No.”
In the VM Mailboxes form of the 
System Administration Tool, 
voice mail boxes appear multiple 
times, or groups of voice mail 
boxes may repeat when changing 
from page to page.
Possible voice mail database 
corruption.
Refer to Mitel Knowledge Base article 
07-4409-00023.
Embedded RAD does not answer 
(ring no answer) or returns Do 
NOT Disturb (DND) tone.
If an incoming call is 
blind-transferred to an 
Embedded RAD, the embedded 
RAD will experience “ring no 
answer” and/or “Do Not Disturb” 
condition.
1. Ensure that the embedded RAD port 
is in a RAD Hunt group.
2. Program the phase timer of RAD hunt 
group to be 1s or higher. 
3. Ensure that all calls are transferred to 
the RAD Hunt group and that no one 
calls directly to RAD port.
Embedded voice mail fails to 
page external, or fail to perform 
supervised transfer to external 
number.
Programming conflict. Refer to Mitel Knowledge Base article 
06-5191-00068.
Embedded voice mail goes out of 
service after “Load Controllers” 
command issued
The “Load Controllers” 
command is used to reboot the 
Peripheral Cabinet and/or the 
DSU. This has had the 
unexpected effect of causing the 
Embedded Voice to go out of 
service.
Avoid the use of the “Load Controllers” 
command. To do this you must physically 
reset the Peripheral Cabinet and/or the 
DSU. If this command has already been 
issued reset the 3300 controller to get the 
embedded voice mail back in service.
Voice mail message playback 
contains noise or audio level is 
too low.
Incorrect Balanced Network 
Setting or Trunk Category in the 
Trunk Circuit Descriptor form of 
the LS trunk that the message 
came in on.
Use the Line Quality Measurement form 
in the System Administration Tool to 
determine the correct settings.
User receives extra audio (tones 
and noise) on his or her voice 
mail message
Voice Mail system is not starting 
or stopping the recording at the 
right time due to incorrect correct 
tone detection file.
In the License and Option Selection form, 
ensure that the Country field is set 
correctly for the system. The Country 
setting determines the default language, 
dialing plan, tone plan, and loss and level 
plan for the system. Refer to the 
Hardware Technical Reference Manual 
for tables that list the Tone Plans.
Table 43: Embedded Voice Mail
Symptom Probable Cause Corrective Action
Page 6 of 6










