Looking for a way to connect a landline phone via a computer that is wirelessly connected to the Internet (which I using now to post this), without physically plugging into a modem/router (since that is on a different floor). This would have to work with cordless phones. I see magicJack EXPRESS Digital Phone Service , but cannot find clear documentation as to whether one can get phone service using this without plugging into a modem, vs. just plugging into a computer that is wirelessly connected to the Internet. Likewise magicJackHome 2019 VOIP Phone Adapter Portable, or OBi200 1-Port VoIP Phone...