A method for establishing a connection-oriented communication

A method for establishing a connection-oriented communication, preferably in the form of a telephone connection over the Internet, between a first communication participant - calling party (1) - and a second communication participant - called party (2) -, where the calling party (1) a request for a connection establishment addressed to the called party (2), is characterized with regard to an effective prevention of spam calls with the least possible influence on the normal telephone operation, characterized in that on the side of the called party (2) after the receipt of the request for establishing a connection initially origin of the request is examined and is decided on the basis of the result of the investigation, whether a connection is made or whether the request is temporarily denied.