Patent ID: 7221683

Claim:
A method for operating a telecommunications system having a packet-switching communications network, the method comprising the steps of: establishing a connection between at least one first subscriber to the packet-switching communications network; establishing a connection between a network element of a circuit-switching communications network to the packet-switching communications network using an interface unit; transmitting first signaling information, intended for the at least one first subscriber, from the network element to the interface unit; processing the first signaling information in the interface unit wherein at least one part of the first signaling information is configured according to a signaling standard of the circuit-switching communication network and the remaining part is converted to second signaling information according to the signaling standard of the packet-switched communications network; and transmitting the processed signaling information from the interface unit to the first subscriber, wherein the second signaling information is transmitted using signaling packets of the packet-switching communications network, and the at least one part of the first signaling information is transmitted using a data area of the signaling packets that do not contain any second signaling information.