Verizon and AT&T Move Toward Voice over LTE Interoperability

Verizon and AT&T are taking the next step in the evolution of VoLTE (voice over LTE) technology by enabling VoLTE- to-VoLTE connections between Verizon Wireless and AT&T customers. VoLTE interoperability between Verizon and AT&T customers is expected in 2015.

Engineers from both companies are working through a full set of requirements, beginning with extensive testing in lab environments and then moving to field trials. This approach ensures customers will have a seamless experience making VoLTE HD Voice calls between networks and lays the foundation for interoperability of other Rich Communications Services (RCS) such as video calls, rich messaging, and more in the future.