Traffic Shaping OpenVPN Tunnels on WAN and Voip traffic inside Tunnel.

[kaneda]

Hello boys, I have a terrible headhache with this, I have some IP phones that connects to main PBX at headquatters thought OpenVPN tunnels lauched from notebooks with OpenVPN CLient, the tunnels transport 1 basic rdp session and 1 IP phone connection.

Even on ADSL lines, some of them have a bad latency that have a severe impact on call quality, To improve this latency, I would need to priorize OpenVPN traffic over the other traffic and outside the tunnel, priorize VoIP over RDP, the traffic come from different subnets:
Notebook OpenVPN interfaz: 172.26.254.X/29
VoIP Phone: 172.26.253.X/29

VoIP phone is being routed thought the Notebook XP to Vpn tunnel to reach PBX at the other side, but it would be nice to priorize VoIP traffic into the tunnel, then on remote sites, I can raise priority o reserve traffic for OpenVPN traffic by destination port, but how to do this on Pfsense side?

Any help would be nice
:D

Many thanks