Service Units - Mitel MiVoice Business 3300 ICP Troubleshooting Manual

3.2.1 Service Units

Table 9: Service Unit Troubleshooting
Symptom
Analog Service Unit
User can hear clicking
sound while on a call on an
external ASU ONS circuits.
Voice calls on ASU have
an echo.
Document Version 1.0
Troubleshooting Guide
Probable Cause
Message Waiting voltage
cycling.
Faulty programming.
Corrective Action
Refer to Mitel
Knowledge Base article
05-4409-00008.
Ensure that the ARS Call
Progress Tone Detection
form for the analogue
trunks is programmed
correctly and ensure that
the Tone to Detect entry
is left blank (i.e. no tone
to detect). If the Tone
To Detect entry is set to
detect a tone, it may cause
echo.
Hardware
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