Okay so I have a bit of a weird one.
Working on a FreePBX/PBXact system and was having problems with UC dialing and Zulu dialing. Zulu just says connecting whenever you try to make or receive call.
On another post a user had suggested enabling stun, which I did and for a short while I thought it was resolved. Then it started having issues again.
To preface, I have the server behind a pfSense firewall and both the Zulu port (default secure port, sorry not in front of my pc) and UDP 10000:20000 are forwarded through to PBX. I have SIP allowed through for local and internet through firewall.
As a test I added a network for the ip of my phone on Verizon and it started working. I think this is telling me somehow RTP is not being allowed through the freepbx firewall. I removed it, it stopped working.
I added a rule to allow custom port 10000:20000 udp through on internet and local and for a short time it worked. I called another location ans got voicemail.
After a bit it seemed like this quit too. I restarted ‘fwconsole firewall restart’ and working again
So how do you ensure 10000:20000 is open to all, unabated and permanently?