Some Phones Are Dead (No Dial Tone Or Lights) - AT&T MERLIN LEGEND Release 3.1 System Manager's Manual

Some Phones Are Dead (No Dial Tone or Lights)

Some Phones Are Dead
(No Dial Tone or Lights)
Possible Cause 1: The telephones are not receiving power.
What to do: Check that each telephone is plugged into a telephone wall jack
known to be working.
If the phones now have dial tone and lights, there may be a problem with
the system wiring or the control unit associated with the faulty phone(s).
Call the AT&T Helpline at 1 800 628-2888.
If the phones are still dead, go to Possible Cause 2.
Possible Cause 2: For single-line telephones, the Idle Line Selection may be
set incorrectly. (If not a single-line telephone, skip to Possible Cause 4.)
What to do: Use centralized telephone programming to ensure that the
Ringing/Idle Line Preference is set to On (see Chapter 5 in System
Programming ). Check to see whether the phone now has dial tone.
If the phone receives dial tone, you have solved the problem.
If the phone is still dead, go to Possible Cause 3.
Possible Cause 3: For single-line telephones, the Auto Line Selection may be
set incorrectly; see Chapter 5 in System Programming . (If not a single-line
telephone, skip to Possible Cause 4.)
What to do: Use centralized telephone programming to set the Auto Line
Selection for the extension. Check to see whether the phone now has dial tone.
If the phone receives dial tone, you have solved the problem.
If the phone is still dead, go to Possible Cause 4.
Possible Cause 4: The telephones may be defective.
What to do: Test each telephone by replacing the dead telephone with a similar
telephone that you know is working properly.
If the replacement telephone receives dial tone and its lights function,
then replace it with the original telephone and check again. If the original
telephone still does not receive dial tone and its lights don't function, then
the original telephone may be defective. Call the AT&T Helpline at
1 800 628-2888.
If the replacement telephone does not receive dial tone and its lights
don't function, there may be a problem with the system wiring or the
control unit. To test one possible wiring problem, go to Possible Cause 5.
Troubleshooting the System
8–3