I have one Kamailio server and one FusionPBX server.
I have two SIP extensions, 11111 and 22222, registered on Kamailio, and I can successfully make calls between them.
Now, I have configured Kamailio to forward calls to the FusionPBX server. The call is indeed being forwarded to FusionPBX, but FusionPBX is not accepting the call.
When checking sngrep, it shows the call as "unavailable".
My goal is to use Kamailio as a proxy and load balancer so that it can distribute calls across multiple FusionPBX instances.
What I Have Tried So Far: Verified that calls are being forwarded from Kamailio to FusionPBX. Checked sngrep and found that calls are marked as "unavailable." Ensured that FusionPBX extensions are correctly registered. Tested direct calls between Kamailio users, which work fine. Question: Why is FusionPBX not accepting calls from Kamailio? How can I make sure Kamailio properly forwards calls to FusionPBX and gets them accepted? Is there any additional configuration needed in FusionPBX for Kamailio to send calls properly?