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Appendix 
Troubleshooting
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For Customer Service, visit our website at www.telephones.att.com or call  
1 (800) 222-3111. In Canada, dial 1 (866) 288-4268.
For more detailed instructions, refer to the online Complete user’s manual at  
www.telephones.att.com/manuals.
My telephone doesn’t work at all.
f Make sure the power cord is securely plugged in.
f Make sure you plug the battery connector securely into the cordless handset.
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telephone base and the telephone wall jack.
f Charge the battery in the cordless handset for at least ten hours. For 
optimum daily performance, return the cordless handset to the telephone 
base or charger when not in use.
f If the battery is depleted, it may take approximately 30 minutes to charge the 
handset before it shows Low battery. See page 9 for details. 
f Reset the telephone base. Unplug the electrical power. Wait for 
approximately 15 seconds, then plug it back in. Allow up to one minute for the 
cordless handset and telephone base to reset.
f You may need to purchase a new battery. Please refer to  
Battery installation and charging in this user’s manual on pages 9-10.
The display shows No line. I cannot get a dial tone.
f Try all the suggestions mentioned above.
f If the previous suggestions do not work, disconnect the telephone line 
cord from your telephone and connect the telephone line cord to another 
telephone. 
f If there is no dial tone on that other telephone either, your telephone line 
cord may be defective. Install a new telephone line cord.
f If changing the telephone line cord does not help, the wall jack (or the 
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your home to connect your CL83519 telephone, or contact your telephone 
service provider (charges may apply).