Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
Good way to make me not care about answering you.
We had the same problem with VitalPBX, and @ScottAlanMiller's suggestion, we made the Opus codec the highest priority and it resolved the issue for us. Maybe it is worth a try for you?
