A computer-implemented method includes: determining, by a computer device, contextual data of plural calls to a callee; generating, by the computer device, a predictive model based on the contextual data of the plural calls; determining, by the computer device, contextual data of a current call to the callee; determining, by the computer device and based on the model and the contextual data of the current call, a probability that the callee will answer the current call; determining, by the computer device and based on the model and the contextual data of the current call, an amount of time to ring for the current call; instructing, by the computer device, a caller device to display the determined probability; and instructing, by the computer device, a callee device to control an amount of rings for the current call based on the determined amount of time to ring.