Our guys are working on this this week and we hope to have it fully nailed down by the end of the week. Unfortunately, it seems to be related to firmware.

We're working on identifying exactly what the firmware issue is to see if it's something we can address without another firmware change. We'll likely make a decision tomorrow if we want to revert.

It's not affecting everyone, but does seem to be affecting enough people to potentially justify rolling it back to the old firmware to give us some time to work it out with Grandstream.