I took the unit supplied by the ISP and it works. DSL has changed a bit and I'm getting 20+ megabit now so I'm unsure if buying your own DSL modem is a good idea today.
Also this unit does the ISP's voip. The only thing missing is your USB port for storage.
I am looking for a device preferably from Linksys that combines WiFi/Wireless and wired home router, home DSL modem and home VoIP all in one. Plus, a USB port for storage will be helpful.