Abstract: The invention concerns a method for providing services located in a connectionless (data) packet network to terminals of a connection oriented communications network, comprising a signalling network for the control of network nodes (LEX, TEX) within said communications network, with a gateway (MGW) connecting said communications network (CN) to said packet network (DN), wherein a terminal (TE1) of the communications network (CN) generates a data packet, comprising a communications network address of said gateway (MGW) in a header and a service information for a server (SER) of the packet network (DN), the terminal (TE1) transmits said data packet to the communications network (CN) over a signalling channel, in the communications network (CN) said header is evaluated and the data packet is forwarded to the gateway (MGW) over said signalling network and the media gateway (MGM) extracts the service information and generates a corresponding protocol information to be forwarded to said server (SER) over the packet