VoIP phone

[manustar]

Hi everyone, I'm going crazy to configure VoIP behind fw. originally the 7 phones were connected to the Vodafone ISP router which has the data LAN 192.168.1.1/24 and the voice LAN 192.168.2.1/24 (vlan20). now I put opnsense on a router port with public IP directly on the wan, on the lan which is now 10.1.1.0/24 I created vlan20 10.2.1.0/24. the phones get the right IP but they don't register, I installed sipproxy, set wan outbound and vlan20 inbound but they still don't work. I'm sure I'm doing something wrong

[manustar]

I was also thinking of another approach. if I connect an opnsense WAN2 interface to a router port on vlan20(192.168.2.1) and the vlan of the phones behind opnsense I give it as a WAN2 gateway all the traffic would go out with the public IP of the 192.168.2.1 network of the ISP router. (I don't know if that's right)