To set up Comcast telephone service, it is necessary to check if Comcast service is available at the address that is requesting service. To do this, potential customers can check their home address for eligibility on the Comcast XFINITY website or call (888) XFINITY to speak with an agent, as of 2015.
If the specified address is eligible for service, customers are then prompted to log in if they are a current Comcast customer, or to register if they are not. Current Comcast customers can log in and change or add services after they provide sufficient credentials related to their account. New potential customers can create a Comcast profile, and can call (877) 431-4823 to get a Comcast agent to help them, especially if they are moving to a new address. Comcast's Movers Edge program also provides new clients with free Wi-Fi while undergoing the moving process.
Comcast services can often be bundled, and current and new subscribers can bundle a home phone service with Internet, cable or a home security system. Those who already have Comcast service and would like to set up home phone service can do so themselves by downloading the XFINITY Voice Welcome Kit and following the instructions in a PDF document.