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Troubleshooting Guide (Continued)
75
The line LED flashes when a
call comes in, but the tele-
phone does not ring.
Some telephones do not ring.
The telephone does not oper-
ate during a power outage.
The battery icon stays lit in the
display.
You cannot hear the other
party.
You cannot join a telephone
call in progress.
The telephone line status indi-
cators stay lit, even though the
line is not in use.
Other problems.
Make sure that the ringer is on (See page 22).
Adjust the ringer volume control (See page 23).
Make sure that Do Not Disturb is not on (See page 37).
If there are several non-system telephones on the line that
does not ring disconnect some of them.
Make sure that a fresh 9-volt battery is installed in the tele-
phone (See page 68).
Make sure that a fresh 9-volt battery is installed in the tele-
phone (See page 68).
Adjust the volume control (See page 23).
The Call Privacy feature prevents another SBC 4000 tele-
phone from interrupting a call in progress. The person
already on the call may release the call privacy or confer-
ence you into the call (See pages 29 and 39).
If you don’t want Call Privacy in your system, you can turn it
off (See page 18).
If this line is not connected to a telephone line, you must set
it as UNCONNECTED (See page 19).
If this line is connected to a telephone line, yet still stays lit,
then adjust the loop voltage detector setting (See page 73).
Make sure that you have followed all of the instructions in
this User’s Guide. If you continue to have problems, call
SBC’s customer support line. If you cannot correct the prob-
lem, disconnect the telephone and refer to the SBC limited
warranty information on page 78.
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