Verizon, AT&T collaborating on VoLTE interoperability between carriers
November 04 2014
Verizon and AT&T are working together to allow Voice over LTE (VoLTE) calls to function normally between mobile phone users on different carriers. Current systems allow for the high definition calls to take place between users on the same carrier, switching to current technologies when calling another phone network, but the two major carriers aim to put an end to the loss of call quality in the future.
VoLTE is an IP-based communications system that runs on top of an LTE network. In order to operate, callers need to use compatible smartphones, ones which will typically only work directly with the standards put in place by the carrier, and so will only work on that carrier. Engineers from AT&T and Verizon are said to be working on interoperability between VoLTE systems, working through a set of requirements with lab tests before switching to field trials, with the possibility the work could lead to other functions to work between networks, such as video calling.