DIffServ - QoS

http://www.hep.ucl.ac.uk/~ytl/qos/diffserv_01.html

http://datatracker.ietf.org/wg/diffserv/charter/

http://www.voip-info.org/wiki/view/DiffServ

http://www.cisco.com/en/US/technologies/tk543/tk766/technologies_white_paper09186a00800a3e2f.html

http://www.cisco.com/en/US/technologies/tk543/tk766/technologies_white_paper09186a00800a3e2f.pdf