Patent ID: 6212267
Filing Date: 2001-04-03
Classification: H04Q

Abstract:
A switching system comprising:a switching network;a call processor for processing a call, executing instructions associated with the call and controlling the switching network to establish a connection depending on the executed instructions;a service module memory for storing a plurality of modules each containing programmed instructions for each service feature;a plurality of service scheduling memories respectively associated with subscribers or groups of subscribers, each of the scheduling memories including a plurality of tables respectively associated with different events which may occur during the process of a call by said call processor, each of said tables comprising a plurality of entries for storing service features of different priorities, each of said entries giving an indication of presence or absence of a following entry for a service feature of lower priority to be executed next depending on a result of requested execution of instructions by said call processor; andcontrol circuitry for detecting one of events when the call processor is processing a call from a subscriber, retrieving a table from the service scheduling memory of the subscriber according to the detected event, retrieving a first module from said service module memory corresponding to a first entry of the table, requesting the call processor to execute instructions of the first module and retrieving, from said service module memory, a second module corresponding to a second entry of said table if a presence indication of the second entry is given in said first entry depending on a result of the requested execution of the instructions of the first module.