Patent ID: 7113515

Claim:
A signaling method for transmitting working data in different types of data transmission networks, in which working data is transmitted between a circuit-switched data transmission network and a data packet transmission network, comprising: transmitting a signaling message that indicates that a data transmission with a terminal of a data packet transmission network is involved in the data transmission; examining whether a data field of the signaling message contains an indication that the terminal is part of the data packet transmission network; if the data field contains no indication, determining whether the signaling message contains an address of a frame transmission net; and if the signaling message contains an address of the data packet transmission network, determining that the terminal is part of a data packet network, wherein the transmission of data between the circuit-switched data transmission network and the data packet transmission network is differentiated from other data transmissions, depending on the content or as a result of the occurrence of the signaling message.