For transmitting data between a node (100) of a mobile network and a further node (200), the further node sends downlink data packets to the node (100) of the mobile network. The downlink data packets carry a destination address corresponding to a user equipment (10) connected to the mobile network. For implementing an inband data channel between the node (100) of the mobile network and the further node (200), the further node (200) inserts data destined to the node (100) of the mobile network into at least one of the downlink data packets and marks this downlink data packet as including data destined to the node (100) of the mobile network. The node (100) of the mobile network receives the downlink data packets from the further node (200) and identities, on the basis of the marking, the least one downlink data packet including data destined to the node (100) of the mobile network. The node (100) of the mobile network then extracts the data from the identified downlink data packet. A corresponding inband data channel may also be used in the uplink direction.