Instruction manual

Standard Device Does Not Dial Out Properly
Possible Cause: A standard device with auto dialing (such as a modem) does not
recognize the intercom dial tone generated by the system.
What to do: Change the setting for
Intercom Dial Tone (#309) for the extension to
“Machine,” so that the system generates central office (outside) dial tone for the extension.
■ If the device works properly, the problem is solved.
■
If the problem remains, call the AT&T Helpline* for assistance.
Poor Transmission Quality on Modem
Possible Cause: A high-speed modem is connected, through an extension jack on the
control unit, to a standard central office telephone line; but the line quality is not sufficient
to generate a clear signal when the modem transmits through the system interface.
What to do: Either connect the modem directly to the network interface jack for a line, or
contact your local telephone company for information about upgrading line quality.
■
■
If the device works properly, the problem is solved.
If the problem remains, call the AT&T Helpline* for assistance.
Other Problems with Phones
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 problem remains, go to Possible Cause 2.
Possible Cause 2: The telephone may be defective.
What to do: Unplug the cord from the base of the problem phone and plug it into a phone
that works.
■
■
If the other phone works, then the old phone was faulty. Call the AT&T Helpline* to
arrange for a replacement.
If the other phone does not work, go to Possible Cause 3.
*
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.
6-10 Troubleshooting