A method for operating a base station

The present disclosure relates to a method for operating a first base station (101) in a communication system (100), the first base station (101) using a first communication link (111) for exchanging data to interoperate with a first core network (107), the communication system (100) comprising a second base station (105). The method comprises detecting a malfunction of the first communication link (111); and establishing a second communication link (201) from the first base station (101) to a selected core network of the first and a second core networks of the communication system (100) via the second base station (105), with the second base station (105) exchanging on behalf of the first base station (101) data with the selected core network, whereby the first base station (101) interoperates with the selected core network through the second base station (105).