Most of my customers are using byod devices. So if I'm lucky, I can simply instruct them to change the address in their device. But for less tech savvy customers, I have to log in remotely and do it for them... which is a big pain when a bunch all need to be switched on the same day.

That is why I wish we could map our own domains. We could change the mapping at anytime, to redirect an entire group of customers to a different server.

I'm able to do that with another voip service, and it works perfectly.