Lately, we've experienced some trouble with stun.3cx.com and stun2.3cx.com. When the servers go down or have a hiccup, we obviously need to scramble and find another public STUN for our phones to register via. (all phones are external to the actual 3CX server). Are the two 3CX Stun servers 'ready for primetime''? That is, are other organizations depending on the availability of those machines for 99.99999% uptime? If not, what stun are you selecting? I have tried to find a decent stun server application that we could host internally, but I haven't found anything that seems simple enough for our use. Thanks in advance!