What is Voice over Internet Protocol (VOIP)?
Voice over Internet Protocol (VoIP) is a technology used to transmit voice and related calls over a data network. Most VoIP service providers use the public Internet to transmit your calls. Comcast does not; we use this technology to transmit your calls over our advanced broadband network. Comcast Digital Voice® service uses VoIP technology to provide you a number of enhanced new features without sacrificing any of your current phone features or the call clarity you expect. To check for availability and to learn more about pricing and introductory offers in your area, go to Shop Comcast Digital Voice or call 1-800-COMCAST.