Method for connecting communications terminals to a exchange via a communications network

The communication terminals are connected to the packet-oriented communication network via a hub and the switching system is connected to the packet-oriented communication network via an access unit. A data format formed of substructural elements is set up for a data transmission between a switching system and the communication terminals. The data to be transmitted in the form of substructural elements are inserted into data packets at the transmitter end for a data transmission via the communication network. The substructural elements are extracted from the received data packets at the receiver end. Accordingly, the data packets have been transmitted transparently with no compression/decompression and conversion according to the RTP protocol at the transmitter and receiver end.