Hi guys, I have 2 network-ip list A, and B that has processed similarly in xml_dialplan.
Call Scenario is pretty simple: A/B -> FS -> C.
For some reasons not listed, I'm using `proxy-refer=true` to proxy REFER msg to C. Using this setting make `force_transfer_context` useless.
But I want to apply REFER from A only, REFER from B needed to be rejected with 403/405 or something. All REFERs are within dialog (RFC3515)
I know I can place a SIP proxy before FS to achieve this. But I don't want to add a SIP component at the moment. So, can you guide me how to do this with FreeSwitch?