We are not getting any dial tone on our phones. Voicemails are coming through and we get alerts on the TV that someone is calling, but the phones sound dead when I pick them up. I have disconnected all the phone and tried a corded phone. Attaching it to the phone jacks in the walls does nothing. If I plug the corded phone directly into the modem, I can get a dial tone. How do I fix this??
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