Method for supporting multicast services and/or broadcast services, which is realised in a decentralised communication device (DSLAM) of a communication network (ACCESS), wherein the decentralised communication device (DSLAM) is connected to at least one subscriber-side communication device (CPE, STP, PC, IP), to a network access device (BRAS) for a higher-ranking communication network and to a multimedia server (VSERV), which transmits multimedia data by means of multicast or broadcast to the decentralised communication device (DSLAM), and wherein the method in the decentralised communication device (DSLAM) has the following steps: - receiving a request from a subscriber-side communication device (CPE, STP, PC, IP) for creating a PPPoE session between the subscriber-side communication device (CPE, STP, PC, IP) and the network access device (BRAS), - intercepting said request, creating a first PPPoE session between the subscriber-side communication device (CPE, STP, PC, IP) and the decentralised communication device (DSLAM) and creating a second PPPoE session between the decentralised communication device (DSLAM) and the network access device (BRAS), - connecting said first and second PPPoE session in such a manner that terminating the first and second PPPoE session in the decentralised communication device (DSLAM) is transparent for the subscriber-side communication device and the network access device (BRAS), - evaluating the data packets received by the subscriber-side communication device (CPE, STP, PC, IP) via the first PPPoE session with respect to containing control information for the access control and also selection information, which is used by a subscriber of the subscriber-side communication device (CPE, STP, PC, IP) in order to select a particular multicast service or broadcast service, - selecting said multicast service or broadcast service from the multicast services and/or broadcast services received by said multimedia service (VSERV) in accordance with the control information discovered for the subscriber and inserting the data stream (icast) of the selected service in the direction of the subscriber-side communication device (CPE, STP, PC, IP) via the first PPPoE session. - receiving a request from a subscriber-side communication device (CPE, STP, PC, IP) for creating a PPPoE session between the subscriber-side communication device (CPE, STP, PC, IP) and the network access device (BRAS), - intercepting said request, creating a first PPPoE session between the subscriber-side communication device (CPE, STP, PC, IP) and the decentralised communication device (DSLAM) and creating a second PPPoE session between the decentralised communication device (DSLAM) and the network access device (BRAS), - connecting said first and second PPPoE session in such a manner that terminating the first and second PPPoE session in the decentralised communication device (DSLAM) is transparent for the subscriber-side communication device and the network access device (BRAS), - evaluating the data packets received by the subscriber-side communication device (CPE, STP, PC, IP) via the first PPPoE session with respect to containing control information for the access control and also selection information, which is used by a subscriber of the subscriber-side communication device (CPE, STP, PC, IP) in order to select a particular multicast service or broadcast service, - selecting said multicast service or broadcast service from the multicast services and/or broadcast services received by said multimedia service (VSERV) in accordance with the control information discovered for the subscriber and inserting the data stream (icast) of the selected service in the direction of the subscriber-side communication device (CPE, STP, PC, IP) via the first PPPoE session.