When a person receives an incoming telephone call, one or more files that the person is most likely to need are provided. The files are identified by analyzing information about what the person did in previous phone conversations with the same caller. That is, when the person opens files in the computer system during a phone call, this is recorded in a register that can be analyzed to identify the most likely needed files. Calls from more than one specific telephone number may be covered by the technique and several answering persons' actions may be tracked.