Instruction manual

Possible Cause 5: Too many standard devices trying to dial simultaneously. (If the
problem is on a system phone, go to Possible Cause 6.)
What to do: Stay on the line and wait for dial tone, or try your call later.
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If you can make a call, you may want to expand system capacity to avoid future
problems. Call the AT&T Helpline.*
If you wait 30 seconds and still do not hear a dial tone, go to Possible Cause 6.
Possible Cause 6: Local phone company line is faulty.
What to do: One at a time, unplug each outside line from the 206, 400, or 200 module
inside the control unit. Then plug each line into a standard telephone and try to make a
call.
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If the trouble appears on the standard phone, try another line cord; if the trouble
persists, report it to your local phone company.
If the trouble does not appear on the standard phone, the trouble is with your control
unit. Call the AT&T Helpline.*
Phone Does Not Ring
Possible Cause 1: Volume control set too low (system phone) or turned off (standard
phone).
What to do: Press the volume control button to increase ringer volume, or turn ringer on.
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If the phone rings increasingly louder, the problem is solved.
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If the phone still does not ring, go to Possible Cause 2.
Possible Cause 2: The Do Not Disturb or Call Forwarding feature is turned on.
What to do: Check to see if
Do Not Disturb or Call Forwarding is turned on.
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If Do Not Disturb or Call Forwarding is turned on, turn it off by pressing the
programmed button.
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If Do Not Disturb or Call Forwarding is not turned on, go to Possible Cause 3.
Possible Cause 3: Phone’s Line Ringing may be programmed for “No Ring” or “Delayed
Ring.”
What to do: Check to see if the phone’s
Line Ringing is programmed for “No Ring” or
“Delayed Ring.”
Refer to “Line Ringing” in Chapter 5 for more information.
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If Line Ringing is set for “No Ring” or “Delayed Ring,” change the setting if necessary.
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If Line Ringing is set for “Immediate Ring,” the phone may be defective. Follow the
procedure for “Other Problems with Phones,” Possible Cause 2.
* 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.
6-4 Troubleshooting