I originally had mine set with the three default 3cx STUN servers (stun.3cx.com, stun2.3cx.com, and stun3.3cx.com). I kept getting the message, "STUN request to STUN server xx.xxx.xxx.xxx:3478 has timed out; used Transport: x.xxx.xxx.xx:5060", constantly and they would flood my server activity log. Now I haven't had any issues at all with 3cx. Everything works perfectly. I'm just getting these annoying messages. I'm just wondering why my server activity log keeps getting flooded with this message. I recently changed the STUN servers to 1) stun.ekiga.net, 2) stun.fwdnet.net, and 3) stun.xten.com to see if that would fix this issue and it didn't. I have ports 3478, 5060, 5480-5488, and 9000-9049 open on my router. I'm using 3cx free edition to test out before purchasing a commercial license, but I don't think the free edition would have anything to do with my issue. Should I change the server timeout? Any help is greatly appreciated.