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{{Notability|date=April 2015}}

In computer networking, the '''Application Session Controller (ASC)''' [[network element]] resides at the [[application layer]] and sits between the application layer and the [[core network]] to provide and manage connectivity to the evolving [[Telecommunication|telecom]] [[Telecommunications network|network]]. The ASC incorporates a number of open standard APIs, plus the signaling, media between disparate networks that converged.<ref>{{cite web |title = Application Session Controller |work= Definithing web portal |date= 17 October 2015 |url= http://definithing.com/define-tech/application-session-controller/ |accessdate=1 June 2016 }}</ref> It insulates the application [[server farm]] from the network below via a programmable network abstraction engine, thereby providing the application specific call-control functions independent of each network.

The ASC incorporates a number of open standard [[Application programming interface|APIs]], plus the signaling, media, and the feature inter-working between disparate networks that converged and consolidated applications require. It is scalable to support tens of millions of subscribers via a single system or via clustering and provides the necessary calls per second / transactions per second required for large-scale multi-network environments.

As Communications Service Providers continue to deploy new network assets and technology at an increasingly rapid pace, achieving feature [[transparency (human-computer interaction)|transparency]] becomes very challenging. The benefit of creating a solution to ensure feature transparency will provide subscribers application feature parity across multiple networks, enable the service providers to consolidate their [[Computing platform|application platforms]] and fully enable them to leverage their network assets to offer converged applications across ever evolving networks.

== See also ==
* [[Session border controller]]
* [[Call control]]

== References ==
<references />

==External links==
* [https://web.archive.org/web/20070820070613/http://www.tmia.org/white_papers/Application_Session_Controllers-AppTrigger.pdf Frost and Sullivan White Paper at The Messaging Industry Association Web site]
* [https://web.archive.org/web/20070715194837/http://telephonyonline.com/ims/news/apptrigger-application-session-042307/ AppTrigger launches first Application Session Controller]
* [https://web.archive.org/web/20070715081731/http://nxtcommnews.com/ims/ NXTcomm IMS One-Stop Page]
* [https://web.archive.org/web/20070927001553/http://www.convergedigest.com/voip/voiparticle.asp?ID=21664 VoIP News]

[[Category:Network service]]

Application Session Controller - Revision history

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