This Abridged user’s manual provides you with basic installation and  
major operation instructions. A limited set of features are described in an 
abridged form.
Please refer to the online CL82101/CL82201/CL82251/CL82301/
CL82351/CL82401/CL82451/CL82501/CL82551/CL82601 DECT 
6.0 cordless telephone/answering system with caller ID/call waiting 
Complete user’s manual for a full set of installation and operation 
instructions at www.telephones.att.com/manuals. 
For customer service, visit our website at www.telephones.att.com or 
call 1 (800) 222-3111. In Canada, dial 1 (866) 288-4268.
This telephone system is compatible with certain AT&T DECT 6.0 cordless 
headsets. Visit www.telephones.att.com/headsets for a list of 
compatible cordless headsets. 
Serial number: __________________________________________________________
Purchase date: _________________________________________________________
Place of purchase: ______________________________________________________________
Both the model and serial numbers of your AT&T product can be found on 
the bottom of the telephone base. 
Save your sales receipt and original packaging in case it is necessary to 
return your telephone for warranty service. 
Model number: 
Type:
CL82101 (one handset) 
CL82201/CL82251 (two handsets)
CL82301/CL82351 (three handsets) 
CL82401/CL82451 (four handsets) 
CL82501/CL82551 (five handsets)  
CL82601 (six handsets) 
DECT 6.0 cordless telephone/answering system 
with caller ID/call waiting
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the AT&T logo are trademarks of AT&T Intellectual Property licensed to  
Advanced American Telephones, San Antonio, TX 78219. Printed in China.