Editing Net neutrality (section)

===Over-provisioning===
If the core of a network has more bandwidth than is permitted to enter at the edges, then good quality of service (QoS) can be obtained without policing or throttling. For example, telephone networks employ admission control to limit user demand on the network core by refusing to create a circuit for the requested connection. During a [[natural disaster]], for example, most users will get a [[circuit busy]] signal if they try to make a call, as the phone company prioritizes emergency calls. Over-provisioning is a form of [[statistical multiplexing]] that makes liberal estimates of [[Peak demand|peak user demand]]. Over-provisioning is used in private networks such as [[WebEx]] and the [[Abilene Network|Internet 2 Abilene Network]], an American university network. David Isenberg believes that continued over-provisioning will always provide more capacity for less expense than QoS and [[deep packet inspection]] technologies.<ref>{{cite web |url=http://isen.com/blog/2007/07/research-on-costs-of-net-neutrality.html |title=Research on Costs of Net Neutrality |access-date=26 December 2008 |last=Isenberg |first=David |date=2 July 2007 |website=isen.com |url-status=live |archive-url=https://web.archive.org/web/20081216143441/http://isen.com/blog/2007/07/research-on-costs-of-net-neutrality.html |archive-date=16 December 2008}}</ref><ref>{{cite news |url=https://arstechnica.com/articles/culture/Deep-packet-inspection-meets-net-neutrality.ars/3 |title=Deep packet inspection meets 'Net neutrality, CALEA |access-date=26 December 2008 |last=Anderson |first=Nate |date=25 July 2007 |work=Ars Technica |url-status=live |archive-url=https://web.archive.org/web/20081216142243/http://arstechnica.com/articles/culture/Deep-packet-inspection-meets-net-neutrality.ars/3 |archive-date=16 December 2008}}</ref>