Abstract: The invention relates to a method of providing a diary management service for a called subscriber of a communications network, in which the appointment management takes place by means of a (personal) electronic diary, comprising the steps of defining each particular time interval in the diary for various types of communication, in particular for telephone calls, telephone conferences, video conferences or personal meetings, and storing said information in a (personal) communication mask, reception of a communication request with the specification of a time request or of a desired type of communication of a calling terminal in the electronic diary, determination of one or more possible appointments for the communication request and communication to the calling terminal, reception of a confirmation of the acceptance of an appointment by the calling terminal and storage of said terminal, and also to a server, a subscriber switching centre and a terminal therefor.