AT&T CL2909 User Manual page 37

Appendix A
Troubleshooting
Caller ID isn't working.
• Caller ID is a subscription service. You must subscribe to this service from
your telephone service provider for this feature to work on your telephone.
• If you subscribe to high-speed Internet service (DSL - digital subscriber
line) through your telephone line, you must install a DSL filter between
the telephone line cord and the telephone wall jack (page 5). The filter
prevents noise and caller ID problems caused by DSL interference. Please
contact your DSL service provider for more information about DSL filters.
• Your caller must be calling from an area that supports caller ID.
• Both your and your caller's telephone service providers must use
equipment that is compatible with caller ID.
No caller ID information while on a call.
• Make sure your telephone service provider provides caller ID information
while you are on a call. This is sometimes known as caller ID on call
waiting or type 2 caller ID.
• The telephone cannot display the caller ID information if another telephone
on the same line is in use. Make sure all extensions are on hook.
DISPLAY DIAL does not work.
• A home area code must be programmed. If you try to dial a number
displayed on the screen before entering a home area code, you will be
prompted to enter the home area code. Enter the code or enter 000 if you
dial 10-digit telephone numbers, then press OPTIONS.
Screen incorrectly displays LINE IN USE.
• Make sure the telephone line cord is connected properly.
No caller ID information for some calls.
• The telephone cannot display or store the information while another
telephone is using the same telephone line, whether this CL2909 telephone
is being used or not.
I cannot edit a directory entry.
• Editing directory entries is not available. You need to create a new entry.
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