Originally Posted by
gfunkdave
I would just put the Ooma behind the Linksys router. Just buy an Ethernet switch if you don't have enough ports.
Only exception is if the Ooma does some kind of Quality of Service to prioritize voice packets. Then you'd want it connected to the modem.
To see the router's WAN address, look at its status on its web configuration page.
QoS is not really going to matter, it's not going to be respected outside your own network anyway. If you think it's going to make a difference on your own network, any half decent router should be capable of QoS, but keep in mind QoS only matters if there is congestion. For that reason it doesn't really matter nearly as often as people think it does.