LOS ANGELES -- A top T-Mobile US executive told FierceWirelessTech that roughly 33 percent of all of the carrier's voice calls are now transmitted using Voice over LTE (VoLTE) technology. That's a notable milestone considering T-Mobile first launched VoLTE in May 2014 in Seattle on a trio of phones.
T-Mobile CTO Neville Ray briefly discussed the carrier's VoLTE progress on the sidelines of the carrier's Uncarrier X announcement in Los Angeles. Ray said one-third of the carrier's calls are VoLTE, a figure that includes in-network as well as outbound calls. He said the carrier continues to work to move all of its operations into IP.
Instead of traveling over old-school, circuit-switched networks, VoLTE sends voice calls over IP-based LTE networks. However, for the user, the experience is pretty much the same -- you dial a number and then talk when someone picks up -- albeit with more audio clarity thanks to HD Voice technology.