Quote Originally Posted by VOIPoTim View Post
VoIP is highly dependent upon a customer's network setup, ISP and router and not all combinations work well with all providers..
I agree 100% with this statement.

After reading your numerous posts over the past several months, your symptoms are logically pointing to your router as the culprit not Voipo. Since nobody else is having this issue, the logic tree applies. As suggested by another poster in another thread, SIP ALG shoud be turned off in your router because this is likely to cause problems as noted in other VOIP forums, but it appears you have not done so based on your latest posts. If so, then why not?? This may be causing the issue.

Your Cradlepoint MBR900 is a "specialized" router with built-in failover to 3G/4G networks, which in itself requires "specialized" firmware to make it all work. Bugs in router firmware are found all time, so who knows what else may be in play here especially since they just released a new version supporting LTE. Without knowing your full network topology, there may be port issues going on as well. I suspect if you temporarily connected your ATA directly to your cable or DSL modem the problems would permanently go away. Since it appears you need Internet failover router, your options are limited at this point.....