Application Gateway Administration GuideChapter 1 Application Gateway OverviewIntroduction to Transformed Applications3Introduction to Transformed ApplicationsThe Application Gateway delivers business applications to Nortel IPtelephones. The Application Gateway can operate with other networkdevices including switches, routers, and cache engines in order tooptimize service performance and enhance user experience.The Application Gateway installs into any network infrastructure withoutrequiring changes to the existing hardware or back-end software. TheApplication Gateway sits in front of content servers and works with othernetworking products such as cache engines, web servers, firewalls, VirtualPrivate Network (VPN) solutions, and routers.The Application Gateway can display a hierarchical application portal onIP phones for quick access to applications. Design Studio is a PC-basedapplication that you use to create transformation rules for Webapplications, modify the Application Menu that displays on devices, andupload changes to an Application Gateway.LicensingNote Refer to the Application Gateway Release Notes for additional licensinginformation specific to IP phones.Application Gateway Software is enabled by user licenses which allow useof the Server Software in increments defined by a license. A license enablesthe Application Gateway to deliver applications to a user.Each IP phone must have a license. A license is assigned to an IP phone’sMAC address the first time that the phone contacts the ApplicationGateway. When a phone registers with the Application Gateway, thenumber of available licenses decreases by one. Thus, if you purchase 100IP phone licenses, 100 of your phones can register with the ApplicationGateway. Once all allowed licenses are associated with a phone,additional connection attempts are denied.The Application Gateway administrator can free a license by changing thestatus of an phone to unlicensed. A phone’s status can be later changedback to licensed, if needed.Refer to the Application Gateway Release Notes for capacity information.