Hardware Installation Guide
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...IRB and NAT Using RFC1483 Bridging - Voice and Quality of Service Features for ADSL and G.SHDSL on Cisco 1700, Cisco 2600, and Cisco 3600 Series Routers, Cisco IOS Releases 12.2(4)XL and 12.2(13)T Sample Configurations - Configuring a Cisco 1700/2600/3600 ADSL WIC With IP Unnumbered E0, DHCP, ... and QoS for Two-Wire or Four-Wire SHDSL, Cisco IOS Release 12.3(7)T - Configuring IPSec Over ADSL on page 19. For more information, see the "Obtaining Documentation, Obtaining Support, and Security Guidelines" section on a Cisco 2600/3600 With ADSL-WIC and Hardware Encryption Modules -...
...IRB and NAT Using RFC1483 Bridging - Voice and Quality of Service Features for ADSL and G.SHDSL on Cisco 1700, Cisco 2600, and Cisco 3600 Series Routers, Cisco IOS Releases 12.2(4)XL and 12.2(13)T Sample Configurations - Configuring a Cisco 1700/2600/3600 ADSL WIC With IP Unnumbered E0, DHCP, ... and QoS for Two-Wire or Four-Wire SHDSL, Cisco IOS Release 12.3(7)T - Configuring IPSec Over ADSL on page 19. For more information, see the "Obtaining Documentation, Obtaining Support, and Security Guidelines" section on a Cisco 2600/3600 With ADSL-WIC and Hardware Encryption Modules -...