AT&T GL2101 Complete User's Manual page 67

Appendix
Troubleshooting
My caller ID isn't working.
Caller ID is a subscription service. You must subscribe to this service from
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your telephone service provider for this feature to work on your phone.
The caller may not be calling from an area that supports caller ID.
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Both your telephone service provider and your caller's telephone service
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provider must use caller ID compatible equipment.
If you subscribe to high-speed Internet service (digital subscriber line - DSL)
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through your telephone lines, you must install a DSL filter between the
telephone line cord and the telephone wall jack (see page 10). The filter
prevents noise and caller ID problems caused by DSL interference. Please
contact your DSL service provider for more information about DSL filters.
I cannot retrieve voicemail messages.
If you subscribe to voicemail service from your telephone service provider
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(charges may apply), contact your telephone service provider for more
information on how to access your voicemail.
I've set my LCD language to Spanish or French and I don't know how to
change it back to English.
On a cordless handset, press MENU/SELECT in idle mode, then enter *364#
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using the dialing keys. You hear a confirmation tone.
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