Have you tried without proxmox? How do you assign the NICs to the opnsense VM?

where and how are you configuring the vlan

in proxmox configure the bridge you are using for WAN NIC as vlan aware

and what vlan are you assigning to the opnsense vm, 4095?

if you set vlan 621 on VM level, then in opnsense VM you don't need to configure vlan anymore
if you set vlan 4095 on VM level, then the VLANs will be passthrough and you will need to configure vlan in opnsense

that depends on where and how are you going to configure the VOIP
if the connection is going through opnsense, then yeah you need to go with the configure VLAN in opnsense method
if you are going to configure it somewhere before opnsense, then it doesn't matter which method you choose

when i was using maxis fiber a few years back, i configured the phone on the ONT itself
https://forum.lowyat.net/index.php?showtopi...60&p=91845910&#
power off ONT, unplug fiber cable(important), configure PC's IP address, power on ONT, login and configure

else, you might want to configure something like this:
ont -> pnic1 -> proxmox vmbr0 -> opnsense vnic1 (wan), vnic2 (voip)

pnic2 -> proxmox vmbr1 -> opnsense vnic3 (voip)

bridge vnic2+vnic3

pnic2 -> maxis router -> dect phone


edit:
or you can also try to bridge the 2 pnic interfaces in proxmox instead of doing it in opnsense

This post has been edited by trix: May 5 2024, 09:57 AM

you only need to mess with ONT if you want to try the configure VOIP in ONT step
try this link, post #4186
https://forum.lowyat.net/topic/3487634/+4180#

btw, these are separate methods:
1.
ont -> pnic1 -> proxmox vmbr0 -> opnsense vnic1 (wan), vnic2 (voip)
pnic2 -> proxmox vmbr1 -> opnsense vnic3 (voip)
bridge vnic2+vnic3 in opnsense
pnic2 -> maxis router -> dect phone


2.
bridge the 2 pnic interfaces in proxmox instead of doing it in opnsense


if you will be using maxis router for VOIP, then doesn't matter #1 or #2
if you will be using any other software VOIP phone, need to use #1 with additional vlan tagging for voip in opnsense