IP telephony enables remote offices to fully participate and profit from advanced multimedia applications, without having to make large capital investments or build separate networks. It also simplifies deployment, reconfiguration and trouble shooting remotely, and cost-effectively. Voice, data, and video convergence over a single IP network streamlines the infrastructure, reduces capital and operating costs and opens the network for new application opportunities. Voice enables multimedia applications, such as unified communications, web-enabled contact centers, presence, and videoconferencing.
IP telephony transmits voice communications over the network using open-standards-based Internet Protocol.