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Basic Troubleshooting Chart
Issue 2.2 April 2005 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 may 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 handset, static,
sudden silences (gaps in
speech), clipped or garbled
speech, etc.
Various potential network problems may be causing the
problem.
Access the Network Audio Quality screen (described in
Viewing the Network Audio Quality in Chapter 6: 4610SW
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 handset 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 the above steps do
not produce the desired result.
A feature does not work as
indicated in this guide (for
example, the Redial button
doesn’t operate as described).
Verify the procedure and retry. For certain features, you
must lift the handset first or place the phone off-hook.
Contact your System Administrator if the above 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
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