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Troubleshooting and Error Messages
70
Problem Possible Cause Solution
"No Service"
is displayed, and
beep tones are
heard.
The handset is out of
range.
Move closer to the CS or try
again later.
The CS or PBX is out of
service.
Consult your dealer.
The CO Status
does not appear.
• The software version of
the PBX/CS/card does
not support this feature.
• The "CO Status Display
in Standby" setting on
the PBX is not enabled.
• The Single CO line
registered in the "Single
CO Appearance" setting
on the PBX is not valid.
• The "CO Status Disp"
setting in "Setting
Handset" is set to
"Off".
(See "Display Option"
on page 62.)
Consult your dealer.
The CO Status
Display is not
displayed in
standby mode or
when receiving a
call as a member
of a PS ring
group.
• Single CO
numbers are
not displayed
on the soft
keys.
• Single CO
numbers are
not displayed
on the Line
menu.
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