I have installed Zulu on my FreePBX and have created a Let’sEncrypt certificate with my domain that points to my FreePBX with ports 8002 and 10000-20000. I have managed to sign into Zulu on my iPhone and MacBook Pro and have had no issues logging in. When I try to make a call on my iPhone, I get an error message saying call failed. When I look at Zulu on my MacBook Pro, the default call device ‘Desk (IP Phone)’ - this just allows me to use the Zulu software to initiate a call to my desk phone and does not allow calls to come through the MacBook Pro.
Are there any known issues with FreePBX 15, asterisk 16 with Zulu or have I dont something wrong with setting up?