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Issue Possible Cause & Solution Reference
Sound cuts out; I can hear
myself through the
speaker.
• You are too far away from the microphone.
→ Try speaking closer to the microphone.
—
• The environment is not suited to speakerphone calls.
→ Do not use the unit within 2 m of projectors, air conditioning
devices, fans, or other audible or electrical noise emitting
devices.
→ If using the unit in a room with windows, close the curtains
or blinds to prevent echoes.
→ Use the unit in a quiet environment.
—
• The unit was moved during a call.
→ Do not move the unit while on a call.
—
• Objects are obstructing the microphone.
→ Do not obstruct the unit during calls. Keep your hands, as
well as common objects such as folders, cups, and coffee
pots away from the unit during calls.
—
• The other party is using a half-duplex speakerphone.
→ If the other party is using a half-duplex speakerphone,
sound may cut out occasionally during calls. For best
performance, the other party should use a full-duplex
speakerphone.
—
Phonebook List
Issue
Possible Cause & Solution Reference
I cannot add or edit entries
to the phonebook list.
• The phonebook list is full.
→ Delete any unnecessary entries. The maximum number of
entries in the phonebook list is 500 for the KX-UT123/
KX-UT133/KX-UT136 and 100 for the KX-UT113.
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Error Messages
During operation, error messages might appear on the unit. The following table lists these messages and
possible causes and solutions.
Message
Possible Causes & Solutions Reference
IP address collision
• The unit’s network settings are incorrect.
→ Consult your system administrator or dealer.
—
Illegal IP address
Invalid IP address
Check LAN cable.
• The LAN cable is not connected.
→ Check all connections.
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Document Version 2011-06 Operating Instructions 75
Appendix