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Combination Extension Problem:
Phone Does Not Ring Properly
Possible Cause 1: Ringer equivalents are too high for the extension.
What to do: If this is a combination extension (two devices), be sure the total of the
devices’ Ringer Equivalence Numbers (REN) does not exceed 2.0. If it does, unplug one
of the devices.
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If the ringer functions properly, the problem is with the auxiliary device; the system is
okay.
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If trouble remains, go to Possible Cause 2.
Possible Cause 2: Auxiliary device (such as a fax, answering machine, or modem) is faulty.
What to do: Remove the auxiliary device from the extension and plug in an auxiliary device
that you know rings properly.
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If the ringer functions properly, the problem is with the auxiliary device; the system is
okay.
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If the trouble remains, go to Possible Cause 3.
Possible Cause 3: Bad adapter or auxiliary device.
What to do: Check the combination extension:
If you are using a direct connection to connect the devices, make sure the standard device
is plugged into the correct jack on the bottom of the phone. See “Combination Extensions”
in Appendix C for instructions.
If you are using a bridging adapter to connect the devices, first make sure the standard
device is plugged into the correct jack on the adapter. See “Combination Extensions” in
Appendix C for instructions. If the extension still does not work properly, unplug the
adapter from the wall jack. Unplug the phone’s cord from the adapter and plug it into the
jack.
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If the phone works, there is a problem with the auxiliary device attached to the
bridging adapter. Replace the auxiliary device. If the problem persists, call the
hotline.*
If the phone does not work, call the hotline.*
✽
In the continental U.S., help is available at 1 800 628-2888. Outside the continental U.S., call your AT&T
Representative or local Authorized Dealer.
6-6 Troubleshooting