Abstract: A method relating to telecommunications in which the telephone of a first subscriber is connected to the telephone of a second subscriber via a standard telephone network and the call is billed to a third subscriber. The first subscriber first dials a subscriber number, preferably preceded by a prefix, which leads to the third subscriber and then dials a subscriber number that leads to the second subscriber. The telephone network connects the call to a telephone-network-connected computer unit that forwards the call to the second subscriber to connect the first subscriber with the second subscriber. The call between the first subscriber and the second subscriber is billed to the third subscriber, and advertisements are transmitted on the call connected between the first and second subscribers.