No, a phone line is not needed . The Wireless Internet connection is bi-directional, meaning your Succeed Internet service is a complete broadband solution. You can also replace your land line phone system with less expensive VOIP service. Or even just get one of our inexpensive call forwarding services such as our home-to-cell service for only $9.99 and drop your home phone service but KEEP YOUR PHONE NUMBER and start receiving those calls on your cell phone and save $40/ mo or more.