The term Voice over IP (VoIP) does not refer to a single service but encompasses an entire collection of services that can fill the phone service needs of many different residential and business ...

Voice over IP (VoIP) is the descriptor for the technology used to carry digitised voice over an IP data network. VoIP requires two classes of protocols: a signaling protocol such as SIP, H.323 or MGCP ...

CNET's Maggie Reardon discusses the short-term hurdles associated with the deployment of voice service over carriers' 4G LTE networks. In the end, the transition to an all IP-based voice network will ...