QOS on Cisco ADSL Routers

QOS Considerations for ATM
http://www.cisco.com/en/US/prod/collateral/routers/ps5855/prod_white_paper0900aecd80645923.html


NBAR
http://www.cisco.com/en/US/docs/ios-xml/ios/qos_nbar/configuration/xe-3s/Enabling_Protocol_Discovery.html

QOS Over IPSEC
http://cciethebeginning.wordpress.com/2011/02/02/qos-and-ipsec-interactions/