I would like to deploy a Balance One at a location with hosted VoIP but leave their current data firewall in place. But I would like to have the phones run through the Balance One for QOS and SIP compatibility. Is there a way to place the data firewall behind the Balance One where that firewall can keep its public static from the ISP and still run a VoIP VLAN through the Balance one for QOS.
Unfortunately not with a Balance One. You’d need Drop-In Mode functionality which would be one step up from the Balance One, the Balance 210/310. Drop In Mode would allow you to bridge the subnet to the LAN. On the One, since it’s NAT-only, you need to port forward to the internal firewall (which will work without issue, just a bit more configuration needed).