Dedicated Pipe for VOIP Subnet

[njkreger]

I have pfSense setup with the following three interfaces:
    -WAN - DHCP (50 down/10 up)
    -LAN - 10.1.0.1
    -VOIP - 10.1.50.1

The LAN interface feeds a switch and subnet with only data (workstations/servers). The VOIP interface feeds a switch and subnet that only contains IP phones.

What I'd like to do is make sure the VOIP interface has a dedicated 1Mbit pipe so that the phones always have bandwidth, whether they're using it or not. That'll leave a 49 down/9 up pipe for the LAN interface and all data.

How do I go about doing this?

Thanks!