I signed up with Axvoice because their price was lower than others. When I received their adapter, I came to know it needed an empty port on my internet modem. I thought Axvoice VoIP could work without internet. My modem is already over loaded. Three computers and a TV are already attached to it. Is there any possibility I can use their adapter without plugging that LAN port into modem. I am not very expert in these issues so excuse me if I sound stupid.