Connecting your Amplex Phone service to your existing home phone wiring is easy. All you will need is a screw driver and a few minutes to connect your Amplex Phone to your home's wall phone jacks. Start by locating your telephone wiring box (called a NID or network interface device) which is usually located on the outside of your home or inside of your garage. This box is grey or off white in color and may say Telephone Network Interface or Network Interface Unit on it. Below are two examples of what it may look like.