Appendix 
135
Troubleshooting
I
suggestions. For Customer Service, visit our website at  
www.telephones.att.com or call  1 (800) 222-3111. In 
Canada, dial 1 (866) 288-4268.
My telephone doesn’t work at all.
 Make sure the power cord is securely plugged in.
 Make sure you plug the battery connector securely into the 
cordless handset.
 
into the telephone base and the telephone wall jack.
 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.
 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. 
 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 and charging in this user’s manual on 
pages 9-11.
The display shows No line. I cannot get a dial tone.
 Try all the suggestions, as 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 
CL82207/CL82307/CL82357/CL82407/CL82507 telephone, or 
contact your telephone service provider (charges may apply).