Systems and techniques are disclosed for establishing inbound calls and outbound calls involving inmates and outside parties. One exemplary technique receives input identifying authorized sources who are authorized to initiate and conduct calls with an inmate and stores a list of the authorized sources. The list, for example, can include telephone numbers, VOIP caller identifiers, and/or call privileges associated with the sources. The technique receives an inbound call directed to the inmate and determines whether the source of the inbound call is authorized or not, for example, by comparing information about the source with information in the list of authorized sources and/or based on the call privileges. If the source is authorized, the call is permitted. If not the technique routes the call to a payment interface for the caller to provide payment information.