MECHANISM TO ENFORCE AVAILABILITY PREFERENCES AND NEEDS OF USER RESOURCES HOSTED BY TELECOMMUNICATION NETWORKS

A method and a system are disclosed for making available telecommunication network resources associated with network subscribers and exposed by a Network Service Gateway (NSG) to clients of the NSG services based on stored subscriber availability preferences. The method and system can be implemented using an availability Policy Server that sits next to or inside of the NSG. The Policy Server interprets the stored availability preferences of subscribers in response to requests for subscriber information. These availability preferences are translated into a low-level policy rule language. The Policy Server implements a policy rule evaluator to evaluate policies written in this language. Policies written in the low-level language are referred to as aPolicies (availability policies). An aPolicy receives as input a stream of events. Based on these events, the aPolicy may decide to take one or more actions. The NSG or clients of the NSG will carry out the execution of the actions.