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Possible Cause 3: Line Ringing is programmed for No Ring or Delayed Ring.
What to do: Check the Line Ringing setting for the extension.
If Line Ringing is set for No Ring or Delayed Ring, change the setting if appropriate.
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If Line Ringing is set for Immediate Ring and this phone is part of a combination
extension, see “Problems with Combination Extensions: Phone Does Not Work
Properly.”
If Line Ringing is set for Immediate Ring and the phone is on an extension by itself,
go to Possible Cause 4.
Possible Cause 4: Phone is faulty.
What to do: Unplug the problem phone and plug in a standard phone that you know rings
properly.
If the replacement phone rings properly, the problem phone is defective. Replace it.
If the replacement phone does not ring properly, call the AT&T Helpline*.
Standard Phone Rings Back After Intercom
Call with No One at Other End
Possible Cause 1: The switchhook on the standard phone is accidentally pressed and
released, causing a call to ring back.
What to do: Always replace the handset carefully. If the problem is not solved, go to
Possible Cause 2.
Possible Cause 2: Automatic Line Selection is programmed incorrectly.
What to do: If one of the phones involved is a standard single-line rotary or touch-tone
telephone, set its Automatic Line Selection to intercom first. If the problem is not solved,
call the AT&T Helpline.*
Standard Phone’s Message Waiting Light Does
Not Light
Possible Cause 1: The standard phone is part of a combination extension that also
includes a system phone with Background Music on.
What to do: Check to see if the system phone has Background Music on, because a
standard phone’s message waiting light will not light if Background Music is on at the
system phone.
If Background Music is on, turn it off. If the standard phone’s message waiting light
lights properly, the problem is solved.
If Background Music is not on, go to Possible Cause 2.
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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.
Troubleshooting
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