I have a 2wire HomePortal 2701 HG-B gateway when I had regular DSL with ATT. When we went to U-Verse TV and Internet, it was replaced with the HomePortal 3800HGV. We are at a new location and had U-Verse High Speed Internet alone, but a Motorola modem with Cisco E1000 router was installed. Is the 2701 gateway compatible and supported with U-Verse? It seemed easier to set up a home network with it rather than the router. It also takes up less space on my computer desk. Does it require a ATT key? The install CD was lost, where can I get install software?