Abstract: A method for communicating in a radio-communication system including an infrastructure network and user stations, wherein the infrastructure network enables the user stations to communicate by way of a so-called push-to-talk method wherein messages can be transmitted using a first type of recipient-identification information to a plurality of user stations and, using a second type of recipient-identification information, to individual user stations. In response to a request relating to specific recipient-identification information, information about the type of specific recipient-identification information is sent to a user station by the infrastructure network.