A system described herein may provide a technique for handling call requests, prior to the performance of a call setup procedure, based on attributes of a calling User Equipment (“UE”) and/or a called UE. A Messaging Application Server may receive a call request, from the calling UE and to the called UE, identify a category or event type associated with the call request, and notify the called UE of the call request, including the category or event type. Different categories or event types may be associated with different sets of eligible actions to perform. The called UE may indicate a particular action, associated with the identified category or event type, and the MAS may handle the call request according to the particular action (e.g., reject the call request or proceed with a call setup procedure).