It works exactly the way you would think. Plug it in using the short cord coming out the side of it. Now you have 5 telephone ports instead of one.
I got two of them, and both work without flaws.
For this price, that's all you can ask for.Get more detail about 5 Port (or 4 , 3 , 2) Way Telephone (Phone , Modem , Fax) Line Splitter 4-Wire Adapter.
