The Cisco 1811 and 1812 provide high-speed broadband or Ethernet access through two 10/100BASE-T Fast Ethernet WAN ports and also provide integrated WAN backup through a V.92 analog modem (Cisco 1811) or ISDN S/T BRI interface (Cisco 1812). The Cisco 1811 and 1812 routers are focused on Ethernet access and are designed to be offered as customer premises equipment (CPE) in Metro Ethernet deployments. The eight-port switch is sufficient for connecting multiple devices and the optional PoE capability can supply power to IP telephones or other devices.
http://www.cisco.com/en/US/products/ps6183/index.html
Example from my lab device:
1812_uut#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0 unassigned YES NVRAM administratively down down
FastEthernet1 unassigned YES NVRAM up up
BRI0 unassigned YES NVRAM administratively down down
BRI0:1 unassigned YES unset administratively down down
BRI0:2 unassigned YES unset administratively down down
FastEthernet2 unassigned YES unset up up
FastEthernet3 unassigned YES unset administratively down down
FastEthernet4 unassigned YES unset administratively down down
FastEthernet5 unassigned YES unset administratively down down
FastEthernet6 unassigned YES unset administratively down down
FastEthernet7 unassigned YES unset administratively down down
FastEthernet8 unassigned YES unset administratively down down
FastEthernet9 unassigned YES unset administratively down down
Vlan1 unassigned YES NVRAM up up
