Voximplant has released Voximplant Web SDK 4.0 which features a number of new enhancements such as Microsoft Edge audio calls support, enable video during an existing audio call, modification of audio and video streams via filters, and h.264 video codec "high priority" setting.
The Web is based on a rather simple notion: There are Web servers and there are clients, such as browsers. It’s an asymmetric kind of a connection: Clients connect to servers to request stuff. This breaks when what we need is more interactivity--for example, when our online webmail service notifies us of a new email, an update to a stock tick or news item, or the ring of our virtual phone. To achieve that, we hack our way with things like XHR, SSE and, recently, WebSockets.