I've been having intermittent problems with me losing the ability to talk on calls that I'm on. Sometimes the calls work great and sometimes I have multiple problems.

Every time I call I get a different answer about something that's being done. "We've tweaked this" or "We've made a change" Reboot and try it now. It will work for a day or so. At least I think it does as it's intermittent and then I get problems again and I call and the same thing.

One thing that strikes me as strange is that I need to open up 5004 - 65000. That seems like an awfully broad range.

Is there a way to limit the ports that are used to a smaller subset?

I've had several other services and never had to open up this many ports.