I have a fax hooked up an ATA186 that would send and receive faxes without a problem. Today the device would not receive faxes but would send them. When I hooked up an analog telephone to the ATA it rings just fine, but when you connect the ATA to the fax it will not ring the fax machine. You can hear the phone ringing but the fax machine will not ring.
The settings on the fax have not changed so I am at a loss as to why this has happened. I even went as far as programming another new ATA 186. When I tested the new ATA it acted the same as the one previously hooked up.