I’m running FreePBX for a small business hosted in a Virtual-box environment locally and I’m really happy with everything, but I’ve an issue that I ignored for some years, but now I would like to resolve it 
On my private internet connection I have 4 incoming voip instances/solutions:
- My MAIN voip number via my Internet provider
- A linksys SPA3000 for another phone number
- FreePBX HOME - used to register several DIDs abroad which forwards to my main voip number
- FreePBX for business purposes
For every voip platform I use a different registration port (5060, 5061, 5070, 5071 and 6111). That is my starting point. Everything is working 100% and no issues except the registration of the Linksys SPA941’s on this business solution.
Some more detail about the solution:
- Freepbx is completely up-to-date
- I did set up (I hope) the registration port to 6111
- Most of the phones register “into the cloud - at home” from different locations/internet connections
Most of the time the phones register, but never on port 6111. As you can see it is often 5060 or a random high port, which I think could be the problem of what I experience…
The solution of a non-registered phone is to reboot FreePBX until every phone is registered. I see this as a work-around
My details for this instance
I would expect every phone to be registered on port 6111, but I’m not a (protocol) expert. I only want to have a stable registrationb process. Any ideas or more information needed ?