AT&T EL51209, EL51359 User Manual


Appendix C
• If you subscribe to high-speed Internet service (digital 
subscriber line - DSL) through your telephone lines, 
you must install a DSL filter between the telephone 
base and the telephone wall jack (see page 4). The 
filter prevents noise and caller ID problems caused by 
DSL interference. Please contact your DSL service 
provider for more information about DSL filters.
• You may be able to improve the performance of your 
cordless phone by installing your new telephone base 
as far as possible from any other existing cordless 
telephone system that may already be installed.
• Other electronic products can cause interference to 
your cordless phone. Try installing your phone as far 
away from the following electronic devices as 
possible: television sets, VCRs, or other cordless 
• Do not install this phone near a microwave oven or on 
the same electrical outlet. You may experience 
decreased performance while the microwave oven is 
• If your phone is plugged in with a modem or a surge 
protector, plug the phone (or modem/surge 
protector) into a different location. If this doesn't 
solve the problem, re-locate your phone or modem 
farther apart from one another, or use a different 
surge protector.
• Relocate your phone to a higher location. The phone 
will likely have better reception when installed in a 
high area.
• If the other phones in your home are having the same 
problem, the problem is in your wiring or local service. 
Contact your local telephone company (charges may 
I get noise, static, 
or weak signals 
even when I’m 
near the telephone