Appendix

Troubleshooting

If you have difficulty with your telephone, please try the suggestions below. For Customer Service, or to purchase accessories or replacement parts, visit our website at www.telephones.att.com, or call 1 (800) 222-3111. In Canada, dial 1 (866) 288-4268. Have the serial number, found on the underside of your telephone, available when contacting customer service. Please retain your receipt as your proof of purchase.

My telephone

Make sure the power adapter is securely plugged into

appears to be dead.

 

an electrical outlet not controlled by a wall switch.

 

Unplug the power adapter from the electrical outlet.

 

 

Wait for approximately 15 seconds, then re-install

 

 

it. Allow up to one minute for the telephone to

 

 

synchronize.

 

Disconnect the telephone base from the telephone

 

 

wall jack and plug in a working telephone. If this

 

 

telephone does not work, the problem is probably

 

 

in the wiring or the local service. Call the telephone

 

 

service provider.

 

 

There is no dial tone. •

First, try all suggestions in My telephone appears

 

 

to be dead on this page.

 

The telephone line cord might be malfunctioning. Try

 

 

installing a new telephone line cord.

 

Make sure the coiled handset cord is securely installed

 

 

between the handset and the telephone base.

 

Disconnect the telephone base from the telephone

 

 

wall jack and connect a different telephone. If there

 

 

is no dial tone on that telephone either, the problem

 

 

is in your wiring or local service. Contact your

 

 

telephone service provider (charges may apply).

 

 

 

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AT&T CL4939 user manual Troubleshooting