I can’t call out or others can’t call me.

There are a number of reasons this can happen. First I will assume that, yes, you can hear a dial tone, and use the diagnostic lights are blinking as expected on the device and that your device is connected to the router via ethernet.

Try connecting the device to your Mac or Windows computer. Wait for the dialpad interface to complete it’s install. It does this every time you re-insert the device into the USB port on your computer. Try making and receiving calls with your computer on and the device functioning.

Are you able to call out and receive phone calls?

I can make or receive calls, but only when my magicJack is connected to my Computer.

I tried this, but I still can’t make or receive calls.