Replace RG (3801HGV) with own router?
I have a Pace 3801HGV residential gateway. The only AT&T service I have is Internet, which is via fiber to the home (aka FTTP - fiber to the premises). As such, the only input going into my 3801HGV is a standard Cat5 ethernet cable. Shouldn't I be able to swap my 3801HGV for my own router? I tried the following two routers with varied success:
I copied my 3801HGV's settings (the Broadband connection settings which simply consist of a static IP, subnet, gateway, DNS, and MTU) and tried them in a DLink DIR-855L router. It worked except that certain websites seemed to not load or load very slowly - not sure why.
I also tried a Cisco E2000 router with the same Broadband settings but could not get an Internet connection at all.
Is there some proprietary signalling or something going on with the AT&T RG's for the Internet connection that other routers will not be able to duplicate?