Ok, so I decided after a frustrating transition and a beer I would give Fusion another shot.
So I deployed a new 2 core 4GB Ram, VPS on Vultr
I installed Centos 7, then Fusionpbx
I then set up my gateways, routes, ext's etc.
I then registered Cisco SPA 525 G2 to ext 1004 and another 525G2 to ext 1005
Then I changed the RTP packe to .020
Then I changed Handle Received according to Daz to YES and YES
Then I created a ring group # 601 to ring ext 1004 and 1005
Now, I went to test . . .
It worked - both ext ring when the ring group is called
However, If I unplug (disconnect) one of the 525 G2 from the network, then it breaks. If you call the ring group the other ext doesn't ring. It rings on he callers side but not on the device itself. Just ends up going to vm after about 8 or 9 rings. If I plug the disconnected 525g2 back in then they both ring again.
So new issue related to above. I fired up an HTEK UC926 and found that it work fine. Now I have the HTEK and the CISCO both plugged in and the ring group ONLY rings the HTEK. I see in the call logs that it shows it is ringing both, but only the HTEK rings.
If I reboot the cisco it will work for about 5 or 10 minutes then it won't receive incoming calls. It can still make outgoing calls, just not incoming
Any ideas?