I am using the ATA192 to supply analog Extension to a Door King call box I have successfully registered the device and it is functioning
but I am having the following ongoing issue: when I press the call button on the Door Box and it goes off hook and dials the
ring group number intermittently on a daily basis the ATA192 locks up with a loud constant touchtone and remains on the ATA192
even when disconnected from the call box the only way to get it to stop is to reset the ATA , It will work fine for a few times then
locks up again when someone presses the call box again. ? does anyone have any idea why this is happening
