Phone Jack Installation Cost The cost of installing a phone jack typically ranges between $108 and $266, with an average price of about $170. The low end is $50 if you do it yourself and over $400 for a complex project requiring professionals.

How much does it cost to convert a phone line to Ethernet?

You can then connect routers, computers, and other devices to these ethernet ports. Depending on the state of the wiring in the home, number of ports required, and amount of professional work needed, the cost of converting phone lines to ethernet ranges from $150 to $300 or more.