http://www.cisco.com/en/US/customer/...80358be7.shtml
Q. What are the highlights of Release 12.4(4)T?
A. The Cisco 1801, 1802, 1803 Integrated Services Routers provide a cost-effective, single-box solution for small, medium, and branch office applications with secure concurrent services for broadband access, including ADSL2/ADSL2+, wireless LAN connectivity (simultaneous 802.11a/b/g), and Redundant WAN Links.
http://www.cisco.com/en/US/customer/...0804a19a2.html
Additional Notes for the Cisco 800 Series
This section contains important information about using the Cisco 800 series routers with Cisco IOS Release 12.4T software.
ADSL2 and ADSL2+ Support
Cisco IOS Release 12.4(4)T introduces ADSL2 and ADSL2+ features for the Cisco 857, Cisco 876 and Cisco 877 routers. For "dsl operating-mode" configuration, see the following:
http://www.cisco.com/univercd/cc/td/...4/dsl_hwic.htm
Sieht also nicht so aus, wuerd auch nicht viel Sinn machen da Eth0 wie Name schon sagt "nur" 10Mbit hergibt