Hi there and welcome
Can you tell me the make and model of the phone?
Can you remove the power to the base unit, and wait 10 minutes.
Connect the power again and tell me if it now functions correctly please.
ok, did you do the last instructions I gave?
Please let me know
ok, it can be an outage in your area
Can you call via your cell, 1(###) ###-####/p>
Have them run a line check and tell me the results please.
ok, I thought because of the AT&T phone.
So it all runs through a Magicjack device correct?
ok, disconnect the power to your Magicjack unit and your internet router.
Wait 5 minutes and connect the power to your internet router.
Wait 5 minutes then connect the power to the Magicjack device and tell me if you can then call please.
ok, let me know the results please
ok, let me know when he has.