Hardware Installation Guide
Page 114
... Devices - Feature Modules - Voice and Quality of Service Features for Cisco 2600 Series Routers, Cisco IOS Release 12.2(4)XL - Configuring a Cisco 1700/2600/3600 ADSL WIC With RFC1483 Routing Using AAL5SNAP Protocol IP - Configuring a Cisco 1700/2600/3600 ADSL WIC With IP Unnumbered E0, DHCP, PPPoA, and PPP-PAP - Configuring a Cisco 1700/2600/3600 ADSL WIC With IRB and NAT Using RFC1483 Bridging...
... Devices - Feature Modules - Voice and Quality of Service Features for Cisco 2600 Series Routers, Cisco IOS Release 12.2(4)XL - Configuring a Cisco 1700/2600/3600 ADSL WIC With RFC1483 Routing Using AAL5SNAP Protocol IP - Configuring a Cisco 1700/2600/3600 ADSL WIC With IP Unnumbered E0, DHCP, PPPoA, and PPP-PAP - Configuring a Cisco 1700/2600/3600 ADSL WIC With IRB and NAT Using RFC1483 Bridging...