T-Mobile has announced the commercial deployment of a new patent-pending technology that it says will improve the already-high reliability of VoLTE (Voice over LTE) a step further. Named 'Enhanced Voice Services', or EVS, the technology was being tested by the ‘un-carrier’ on its network with devices like the newly-launched LG G5, which reportedly comes EVS-ready right out of the box. However, smartphones like the Galaxy S7 and Galaxy S7 Edge also recently gained EVS capabilities thanks to software updates rolled out to them by T-Mobile. For those unfamiliar with EVS and how it improves the voice call quality and reliability, the new technology is said to use complex speech compression algorithms as part of its efforts to replace the HD voice codec AMR-WB, which is the current gold standard for carriers who have rolled out VoLTE to their respective customers.
T-Mobile’s CTO, Mr. Neville Ray, announced the commercial roll-out of EVS on its network earlier today, and mentioned three different points as to how it is better than the technology that’s currently being employed by the company’s competitors, whom he describes as “tired old telecoms”, presumably referring to the likes of Verizon and AT&T. Firstly, according to Mr. Ray, “EVS improves voice call reliability in areas of weaker signal” , which ensures lower call-drop rates than standard VoLTE services. Secondly, EVS surpasses VoLTE in terms of call quality, making the voice come across clearer and richer, thanks to the use of a broader audio frequency range than standard-issue HD Voice technology. Finally, EVS is network-neutral, meaning, it just works irrespective of whether the calls are being placed via Wi-Fi or over T-Mobile’s LTE network.
T-Mobile also says that it is looking to make more of its smartphones EVS-ready in the coming weeks and months, with as many as seven other devices on its network set to get software updates to make them EVS-compliant. While Mr. Ray doesn’t mention the exact models that will receive the new feature, he does make it a point to mention that as many as twenty-seven million T-Mobile customers in the U.S. currently use forty different models of VoLTE-enabled smartphones to make 300 million calls on a daily basis.