I disconnected the outside line from the box and tide all the extentions together, then plugged the wall jack into the Magicjack and it worked on all extentions.

So far magic jack works great. I got rid of my land line and have data only, my computer is on all the time anyway with a UPS system attached in case the power goes out. $39.95 plus shipping, then $19.95 each year after. I don't use a home phone enough to pay the phone company's rates anymore, so this cuts the bills fast. I have the data ...