Congratulations
on your purchase of this AT&T product. Before using this AT&T 
product, please read the Important safety information section 
on page 148- 150 of this manual. Please thoroughly read this 
user’s manual for all the feature operations and troubleshooting 
information necessary to install and operate your new AT&T 
product. You can also visit our website at  
www.telephones.att.com or call 1 (800) 222-3111.  
In Canada, dial 1 (866) 288-4268.
This telephone meets the California Energy Commission regulations for energy 
consumption. Your telephone is set up to comply with the energy-conserving 
standards right out of the box. No further action is necessary.
This telephone system is compatible with certain AT&T DECT 6.0 cordless 
headsets and speakerphones. Visit www.telephones.att.com/accessories 
for a list of compatible cordless headsets and speakerphones.
Model number:  CL82107 (one handset) 
    CL82207 (two handsets) 
    CL82307/CL82357 (three handsets) 
    CL82407 (four handsets) 
   
Type:    DECT 6.0 cordless telephone/answering system with  
    caller ID/call waiting
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. 
© 2017 Advanced American Telephones. All Rights Reserved. AT&T and  
the AT&T logo are trademarks of AT&T Intellectual Property licensed to  
Advanced American Telephones, San Antonio, TX 78219. Printed in China.
when used with most T-coil equipped hearing aids and cochlear implants. 
The TIA-1083 Compliant Logo is a trademark of the Telecommunications 
Industry Association. Used under license.
The ENERGY STAR® program (www.energystar.gov) recognizes and 
encourages the use of products that save energy and help protect our 
environment. We are proud to mark this product with the ENERGY STAR®