AT&T EL52303 Cordless Telephone User Manual

My cordless handset does not ring when I receive a call.
Make sure that the ringer is not turned off. Refer to Ringer volume on
page 13.
Make sure the telephone line cord is plugged securely into the telephone
base and the telephone wall jack. Make sure the power cord is securely
plugged in.
The cordless handset may be too far from the telephone base.
Charge the battery in the cordless handset for at least 16 hours. For
optimum daily performance, return the cordless handset to the telephone
base or charger when not in use.
You may have too many extension telephones on your telephone line to
allow all of them to ring simultaneously. Try unplugging one telephone at
a time until the telephone start ringing.
The layout of your home or office might be limiting the operating range.
Try moving the telephone base to another location, preferably on an
upper floor.
If the other telephones in your home are having the same problem, the
problem is in your wiring or telephone service. Contact your telephone
service provider (charges may apply).
Test a working telephone at the telephone wall jack. If another telephone
has the same problem, the problem is the telephone wall jack. Contact
your telephone service provider (charges may apply).
Other electronic products such as HAM radios and other DECT phones
can cause interference to your cordless telephone. Try installing your
telephone as far away as possible from these types of electronic devices.
Completely remove then replace the battery. Place the cordless handset
in the telephone base. Wait for the cordless handset to reestablish its
connection with the telephone base. Allow up to one minute for this to
take place.
Your telephone line cord might be defective. Try installing a new telephone
line cord.