A cellular mobile network allows a user equipment to connect to the network, the user equipment having a subscription for using the network to send data intermittently and to disconnect temporarily from the network automatically between its data transmissions. Parameters relating to the automated temporary disconnections are communicated, and data is sent from the user equipment while the user equipment is connected. The automated temporary disconnections and reconnections are detected by the network. By allowing user equipments which automatically disconnect temporarily between their data transmissions, the network need no longer provision for all such user equipments to be connected to the network simultaneously. Thus more such user equipments can be accepted as subscribers. By communicating with the user equipment about the temporary automated disconnections from the network, the network can have some control of, or at least be made aware of, the temporary automated disconnections.