well i can tell you that after been sending messages like crazy to costumer support the adapter is finally working fine. on my last ticket they ask if i have the adapter connected to the house wiring and i told them that yes thats the way is been connected since i got it, they say they did some ajustments. but i also desconnect it from the house wiring and hook 2 phones with multiple handsets and place it back after the router put the mac address in dmz and so far one thing or the other, but is working fine with not troubles at all.
thanks guys
is just to share my experiences with you.