T
ROUBLESHOOTING
C
ID
ALLER
Problem
No Display
Caller ID Error Message
40
T
IPS
Solution
• Is battery fully charged? Try replacing the battery.
• If you are using AC power, make sure that the unit
is connected to a non-switched electrical outlet.
Disconnect the unit from the plug and plug it in
again.
• Did you order Caller ID service from your local
telephone company? The display won't work
unless you order Caller ID service from your phone
company.
• The unit displays this message if it detects
anything other than valid Caller ID information
during the silent period after the first ring. This
message indicates either the presence of noises on
the line, or that an invalid message has been sent
from the telephone company.