I am trying to make VoIP/SIP call from a RouterOS hotspot. It works with some SIP providers but not with others so it’s probably a problem between the various NAT/firewalls involved.
The softphone register correctly with the BPX but when I try to make a call, there is no sound (both directions).
If I disable the hotspot on RouterOS but keep all other settings, including the SNAT, everything work fine.
If I accept the address of the BPX in the “walled garden IP list” of the hotspot, then it works if I am not authentificated on the hotspot. If I do the authentification, then it stop working.
Is there a way to use firewall rules to bypass the hotspot when trying to reach the address of the BPX? A way to get the same result, when authentificated, as when using “walled garden IP list”? (I know it’s not a very nice solution but I would be fine with a way of just bypass any hotspot firewall rules/nat when trying to reach a specific destination)