I take things too literal

I bought a broadband phone line from BroadVoice(as if I needed this sixth phone line, lol, reason I got it was because it charges a flat fee for calling to Europe so my wife can talk all she wants without worrying about running up the phone bill anymore), which came with a broadband router and phone adapter, and am laughing at myself for lacking even the slightest glimmer of creativity in setting it up. The instructions say set it up between the cable modem and the router, so being the good little guinea pig that I am, I followed instructions to a word. Well, the phone worked fine, but my router wouldn’t work through the phone adapter thingy. So, I got frustrated and contacted their support. So, their support person told me “you can always put the device behind a router if you need to.” Duh… how the heck did I miss such an obvious solution.