AUTOMATIC RESPONSES TO INCOMING CALLS BASED ON USER ACTIVITY

An automatic response service supported on an application server that interoperates with an IMS (IP Multimedia Subsystem) core network is configured to dynamically generate responses to unanswered incoming telephone calls to a user's computing devices that are customized for the calling party based on monitored activities of the user, device capabilities and state, and related context. The automatic response service can monitor the user's interactions across a range of computing devices to identify a device with which the is actively engaged. Data from device registrations with the IMS core network can indicate current device capabilities and device state such as peripheral device configuration and network connectivity. Along with call data such as caller ID, the monitored user activities and device information enable the service to automatically respond to incoming calls on behalf of the user with information that is meaningful and contextually-relevant to the calling party.