16
T
ROUBLESHOOTING
T
IPS
N
O
D
IAL
T
ONE
ON
THE
P
HONE
A
TTACHED
TO
THE
C
ALLER
ID U
NIT
•
Check all cabling to make sure that all connections are secure.
•
Check installation (p. 3-8)
•
Disconnect the caller ID unit and reconnect phone to find out if the phone works
without the caller ID unit.
N
O
D
ISPLAY
•
Replace batteries.
•
Did you order caller ID service from your local telephone company? This unit
requires that you subscribe to caller ID service in order for it to work.
E
RROR
M
ESSAGE
IS
D
ISPLAYED
•
SERVICE ERROR appears in the display if the unit detects anything other than valid
caller ID information during the silent period after the first ring. This message
indicates that there is noise on the line or that the telephone company has sent an
invalid message.
