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Basic Troubleshooting Chart
Issue 4 November 2006 79
Characters do not
appear on the Display
screen.
See Phone does not activate after connecting it the first time..
Check all lines into the phone to ensure that it is properly
connected.
Check the power source to ensure that your telephone is receiving
power.
Perform the following Test procedure: with the telephone idle
(on-hook), press and release the Mute button. Then press the
following numbers on the dialpad: 8 3 7 8 # (which stands for
TEST). The display should indicate the self-test has started, then
report if the test was successful or failed. If nothing appears on the
display, and the phone is receiving power, your phone might need
to be replaced.
If these suggested solutions do not resolve the problem, reset or
power cycle the phone with your System Administrator’s
assistance.
Audio quality is poor,
specifically, you hear an
echo while using a
headset, static, sudden
silences (gaps in
speech), clipped or
garbled speech, etc.
Various potential network problems might be causing the problem.
Access the Network Audio Quality screen (described in Viewing the
Network Audio Quality in Chapter 6: 4622SW IP Telephone
Options) to provide your System Administrator with specific
information related to this problem.
Contact your LAN Administrator with as complete a description of
the problem as possible.
No dial tone. Check that both the headset and line cords into the phone are
securely connected. Note that there might be a slight operational
delay if you unplug and reconnect the phone.
Reset or power cycle the phone with your System Administrator’s
assistance. (See the section titled Resetting and Power Cycling the
IP Telephone for details.)
Contact your System Administrator if these steps do not produce
the desired result.
A feature does not work
as indicated in this guide
(for example, the Redial
button does not operate
as described).
Verify the procedure and retry. For certain features, you must
activate the headset first or place the phone off-hook.
Contact your System Administrator if this action does not produce
the desired result. Your telephone system might have been
specially programmed for certain features applicable only to your
installation.
All other IP phone
problems.
Contact your System Administrator.
Problem/Symptom Suggested Solution (continued)
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