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Appendix
Troubleshooting
If you have difficulty with your telephone, please try the following suggestions. 
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. When you call customer service, you 
will need the serial number or model number found on the bottom of the 
telephone base.
My telephone doesn’t work at all.
Make sure the power cord is securely plugged in.
Make sure that the battery connector is securely plugged into the  
cordless handset.
Make sure the telephone line cord is securely and firmly plugged into the 
telephone base and the telephone wall jack.
Make sure the battery is fully charged. See Technical specifications on 
page 74 for battery charging times. For optimum daily performance, return 
the cordless handset to the telephone base or charger when not in use.
If the battery is depleted, it may take approximately 30 minutes to charge 
the handset before it shows LOW BATTERY, refer to Battery charging on 
page 6 for details.
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.
You may need to purchase a new battery. Please refer to Battery installation 
on page 5.
The display shows NO LINE. I cannot get a dial tone.
First try all of the suggestions mentioned above.
If the previous suggestions do not work, disconnect the telephone line 
cord from your telephone and connect the telephone line cord to another 
telephone. 
If there is no dial tone on that other telephone either, your telephone 
line cord may be defective. Install a new telephone line cord.
If changing the telephone line cord does not help, the wall jack (or the 
wiring to this wall jack) may be defective. Try using a different wall jack 
in your home to connect your EL52200/EL52210/EL52250/EL52260/
EL52300/EL52350/EL52400/EL52410/EL52450/EL52500/EL52510 
telephone, or contact your telephone service provider (charges maycontact your telephone service provider (charges may 
apply).
I cannot dial out.
First try all the suggestions in the item The display shows NO LINE.  
I cannot get a dial tone.
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