PhoneJack With an AirWay PhoneJack you can add fax machines and hard-wired phone equipment to the network. Now you can place a fax machine anywhere, not just where a traditional phone outlet is located, and you can even use your existing equipment on the network. Also, by attaching a PhoneJack to standard telephony equipment does more than just puts them on the network. Essentially your single line phones become multi-line phones because they will have access to EVERY phone line on your network. If your network has four phone lines, your traditional phone will be able to access all four of those lines. Neat, huh?