Bridging VLAN's

My 60D is in NAT mode.

I have 2 different hardware subnets on the Internet subnet (ie 192.168.0.x and 192.168.1.x) for 2 different departments.

I have a tagged VLAN for VOIP phones that needs to flow through the 60D. (This is how the current MikroTik does it). (The VOIP system controller is connected to a L2 switch.)

What is the proper way to have the tagged VLAN packets pass through the device?

Thanks!