A method of establishing a bearer in a packet switched mobile wireless communications network comprising a mobile device and a network node, and a corresponding network. A predetermined maximum number of bearers can be established for the mobile device within the network. Bearer information can be sent indicating the predetermined maximum number of bearers, a remaining number of bearers, or that no more bearers can be established. If no more bearers can be established and a further bearer is required a bearer previously established for the mobile device within the network can be released and if required a bearer synchronization procedure can be performed. A further bearer for the mobile device within the network can then be established. Alternatively, if the mobile device determines that an emergency PDN connection is required, it can send a request for a further bearer to the network node. If a current number of bearers established for the mobile device is equal to the maximum number of bearers, the network node can release a previously established bearer establish a bearer for an emergency PDN connection.