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System Phone Does Not Work
Possible Cause 1: Phone needs to be reset.
What to do: Unplug the cord from the base of the problem phone and (with the handset
hung up) plug the cord in again.
If the phone works properly, the problem is solved.
If the problem remains, go to Possible Cause 2.
Possible Cause 2: The telephone is defective.
What to do: Unplug the cord from the base of the problem phone and plug the cord into a
phone that you know works.
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If the replacement phone works, the problem phone is faulty. Call the AT&T Helpline*
to arrange for a replacement.
If the replacement phone does not work, go to Possible Cause 3.
Possible Cause 3: The telephone cord is defective.
What to do: Unplug the cord from the base of the phone and the wall jack. Replace the
cord with a cord that you know works.
If the phone works, the cord is faulty. Call the AT&T Helpline* to arrange for a
replacement.
If the phone does not work, and it is part of a combination extension, see “Problems
with Combination Extensions: Phone Does Not Work Properly,” Possible Cause 3.
If the phone does not work and it is not part of a combination extension, call the
AT&T Helpline.*
Problems with Standard Phones
Standard Phone Does Not Ring
Possible Cause 1: Ringer is turned off.
What to do: Turn on the ringer
If the phone rings, the problem is solved.
If the phone still does not ring, go to Possible Cause 2.
Possible Cause 2: Call Forwarding is turned on.
What to do: Check to see if Call Forwarding is turned on.
If Call Forwarding is turned on, turn it off.
If Call Forwarding is not turned on, go to Possible Cause 3.
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In the continental U.S., help is available at 1 800 628-2888. Outside the continental U.S., call your local
AT&T Authorized Dealer.
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Troubleshooting