Abstract: A method for calling up a media file wherein the content of the called up media file is presented unrequested to the user of one of the multiple telecommunication terminals via a connection established with a telecommunication terminal includes provisioning of an interface in the telecommunication control unit such that the media file stored outside a telecommunication system can be accessed via the interface. The establishment of the connection can also include installation of a media assignment target in the telecommunication control unit central to the telecommunication system, selection of the media assignment target by one of the multiple telecommunication terminals and placement of a link to the media file in the telecommunication control unit by means of which the media file is assigned, and call-up of the media file by the telecommunication control unit via the interface using the link placed in the telecommunication control unit.

Abstract: A method for calling up a media file wherein the content of the called up media file is presented unrequested to the user of one of the multiple telecommunication terminals via a connection established with a telecommunication terminal includes provisioning of an interface in the telecommunication control unit such that the media file stored outside a telecommunication system can be accessed via the interface. The establishment of the connection can also include installation of a media assignment target in the telecommunication control unit central to the telecommunication system, selection of the media assignment target by one of the multiple telecommunication terminals and placement of a link to the media file in the telecommunication control unit by means of which the media file is assigned, and call-up of the media file by the telecommunication control unit via the interface using the link placed in the telecommunication control unit.

Abstract: A method for calling up a media file wherein the content of the called up media file is presented unrequested to the user of one of the multiple telecommunication terminals via a connection established with a telecommunication terminal includes provisioning of an interface in the telecommunication control unit such that the media file stored outside a telecommunication system can be accessed via the interface. The establishment of the connection can also include installation of a media assignment target in the telecommunication control unit central to the telecommunication system, selection of the media assignment target by one of the multiple telecommunication terminals and placement of a link to the media file in the telecommunication control unit by means of which the media file is assigned, and call-up of the media file by the telecommunication control unit via the interface using the link placed in the telecommunication control unit.

Abstract: A method for calling up a media file wherein the content of the called up media file is presented unrequested to the user of one of the multiple telecommunication terminals via a connection established with a telecommunication terminal includes provisioning of an interface in the telecommunication control unit such that the media file stored outside a telecommunication system can be accessed via the interface. The establishment of the connection can also include installation of a media assignment target in the telecommunication control unit central to the telecommunication system, selection of the media assignment target by one of the multiple telecommunication terminals and placement of a link to the media file in the telecommunication control unit by means of which the media file is assigned, and call-up of the media file by the telecommunication control unit via the interface using the link placed in the telecommunication control unit.

Abstract: Data are interchanged between a communications application and a communications installation via an IP network. To this end, the communications application uses an application-end primary control unit to communicate with the communications installation. A first transmission path is used to interchange basic control data and the user data on the basis of a first transmission standard between the primary control unit and the communications installation, and a second transmission path based on a second transmission standard is used to interchange extended control data between an auxiliary control unit and the communications installation.