Systems and methods for determining whether an automated telephone call has been answered by a particular user, a different person, or a voicemail service. In response to determining that the call has been answered by the user, a different person, or a voicemail service, the systems and methods can output different respective messages, initiate messaging to the user via alternate communication paths, or perform other actions. It receives (305) audio data associated with a call to a user device (102) associated with a user. detecting, from the audio data, one or more audible rings of an internal ring tone indicative of a pending attempt to connect the call. It detects from the audio data, that the call is connected. It determines a total number of the audible ring(s) that occurred before the call was answered. It compares (410,510) the total number of the audible ring(s) to historical ring data associated with contact information associated with the call to determine a likelihood that the call has been answered by the automated voicemail service.