Netgear D2200d Modem Manual
This article will help you configure the ADSL settings of your NETGEAR DSL modem/router manually. The information in this article applies if you are configuring a DSL Internet connection with a NETGEAR router that uses the Smart Wizard interface. If you have a newer router with the genie user interface, see How to manually configure the ADSL settings on a NETGEAR DSL Gateway with NETGEAR genie. D2200D by Netgear information and hardware knowledge base. Access Point features - all unknown. DSL Modem features - all unknown. Firewall features - all unknown. D2200D ADSL Gateway 802.11n ADSL gateway offers high-end quality and reliability in an economical solution. The NETGEAR D2200D is a single WAN 802.11n ADSL gateway platform that offers operators a highly cost-effective solution with the NETGEAR quality, reliability, ease-of-use and best-in-class performance they expect.
from what I could dig up, the firmware and configuration for the older 7550 and the D2200D are supposed to be the same, or at least very similar.
Frontier Netgear Modem D2200d Manual
For the 7550, these were the instructions:
Netgear D2200d 1frnas Firmware
Open your web browser and log into the router. The default address is 192.168.254.254. The default user ID is admin and the default password is either admin or password. Once you have logged into the route click on My Connected Home > Network Connections > Broadband (DSL) > PPPoE (edit)>VC1 Configuration click on the down arrow where Protocol is listed and select Bridge, click Apply. You have now placed the router in bridge mode.