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B. CALLER ID SYSTEM TROUBLESHOOTING TABLE
Symptoms
The Caller ID panel
is blank
The Caller ID does
not show the caller's
name and / or phone
number.
Random characters
and / or "NO DATA"
appear on the LCD
display.
Cannot get Call Wait-
ing identification on
the LCD panel.
Possible Solution / Cause
••
••
• Check the power connection.
••
••
• Check the telephone line cord connections.
••
••
• Check the batteries for proper installation.
••
••
• The Caller ID unit will not function until you have Caller ID
service provided by your local phone company. Call your local
phone company to have Caller ID installed on your telephone
line.
••
••
• Check your telephone line connections. Make sure all connec-
tions are secure and connected.
••
••
• If you pick up the phone before the second ring, the caller in-
formation will not be correctly received. If you have telephone
answering device (TAD) connected with the unit, set the TAD
to answer after two ring s or more.
••
••
• If it is a blocked call or an out-of-area call, the caller's name
and / or phone number will not appear on the display.
••
••
• If only the caller's phone number appears on the display, it
may be a Single Data Message Format (SDMF) call, as op-
posed to a Multiple Data Message Format (MDMF) call. Please
call your local phone company to see which service you have.
••
••
• On rare occasions, the Caller ID information sent by the tele-
phone company may have an error in the transmission. This is
not the fault of your Caller ID unit. It can only capture and store
the data that was received.
••
••
• Subscription to Caller ID Call Waiting (CIDCW) is required from
your local phone company for the CIDCW function to operate
properly. Call you local phone company for details.
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