AT&T 1080 User Manual page 80

Appendix J
In case of difficulty
LOW BATT is displayed on
screen.
The telephone does not
ring when there is an
incoming call.
Cannot join a conversation
in progress.
• Check to make sure that each telephone set
has a unique extension number. If the sets
receive AC power at the same time, either
at initial installation or after a power failure, the
extension numbers may be the same. Refer
to the EXTENSION NUMBER section of the
installation guide, (page 32).
• No spare battery is installed or the spare battery
needs to be replaced.
• Remove and re-install the battery.
• Make sure the ringer is on (page 14).
• Make sure the telephone line cord(s) and the
power adapter are plugged in properly (See the
Installation Guide).
• There may be too many extension telephones on
the telephone line to allow all of them to ring
simultaneously. Try unplugging one phone at a
time until the phones start ringing.
• Test a working telephone at the same
telephone jack. If another telephone has
the same problem, the problem is in the
telephone jack. Contact your local telephone
company (charges may apply).
• The telephone line cord might be malfunctioning.
Try installing a new telephone line cord.
• Make sure the Do Not Disturb feature is not activated
(page 15).
• Make sure the ringer delay time (page 34 of the
installation guide) is not longer than the answer
delay time of the answering system (page 58 of the
installation guide). This would cause the answering
system to answer the call before the phone rings.
• If you are on a call, there will be a beep to alert
you of incoming calls on the other lines.
• Make sure that the LINE GROUP assignment is
correct. See page 43 of the installation guide.
• The call privacy feature prevents another set on
the system from interrupting a conversation.
Make sure you press the LINE button to release
privacy. (See Call privacy on page 21.)
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