Phone doesn't show caller id numbers anymore. Yes, I do have
the caller id service from AT&T.
Can you help?
You need to make sure you have programmed your area code...check the manual for setting up caller ID. You can search for the manual on line...go to Retrevo.com
http://www.retrevo.com/support/Sony-IT-M602-Telephones-manual/id/751bh629/t/2/
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