VoLTE
Voice Over LTE (Long Term Evolution)
A standard allowing voice calls to be placed over an LTE network.
See: LTE
VoLTE also updates voice connections to use a more more modern packet-switching technology, instead of old, inefficient circuit switching.
See: Packet Switching
See: Circuit Switching
Most LTE networks worldwide were launched initially supporting only data service. A stop-gap technology called CSFB allowed phones to use LTE for data and 2G or 3G networks for voice.
See: CSFB
VoLTE allowed LTE (4G) networks to completely replace 2G and 3G networks. It also eliminated the need for CSFB.
