A method for provisioning a terminal device to a mobile communication network, the terminal device is equipped with a subscriber identity module, the method, performed by the terminal device, comprises: requesting an attachment to the mobile communication network by generating a request of an attachment comprising an International Mobile Equipment Identity, IMEI as a device identifier of the terminal device and failing to identify a subscription of the terminal device in the request of the attachment, receiving a response from the mobile communication network, the response indicating an allowance of a limited access mode with a Non-IP Data Delivery functionality, NIDD, for the terminal device to the mobile communication network, receiving a temporary International Mobile Subscriber Identity, IMSI, for applying it for a communication to reach the terminal device, requesting, by applying the limited access mode with the Non-IP Data Delivery functionality, NIDD, in a communication over the mobile communication network, a provisioning of the terminal device from a remote network node accessible based on the subscriber identity module residing in the terminal device, receiving data over a control plane performed with the Non-IP Data Delivery functionality, NIDD, from the remote network node, the data comprising an International Mobile Subscriber Identity, IMSI, allocated to the terminal device, provisioning the terminal device based on the received data over the control plane, a provisioning defining at least one parameter for accessing the mobile communication network in an enhanced access mode, the at least one parameter is an International Mobile Subscriber Identity, IMSI, for accessing the mobile communication network with the enhanced access mode, and in response to a configuration re-requesting the attachment to the mobile communication network by applying the at least one parameter being the International Mobile Subscriber Identity, IMSI, to access the mobile communication network with the enhanced access mode. requesting an attachment to the mobile communication network by generating a request of an attachment comprising an International Mobile Equipment Identity, IMEI as a device identifier of the terminal device and failing to identify a subscription of the terminal device in the request of the attachment, receiving a response from the mobile communication network, the response indicating an allowance of a limited access mode with a Non-IP Data Delivery functionality, NIDD, for the terminal device to the mobile communication network, receiving a temporary International Mobile Subscriber Identity, IMSI, for applying it for a communication to reach the terminal device, requesting, by applying the limited access mode with the Non-IP Data Delivery functionality, NIDD, in a communication over the mobile communication network, a provisioning of the terminal device from a remote network node accessible based on the subscriber identity module residing in the terminal device, receiving data over a control plane performed with the Non-IP Data Delivery functionality, NIDD, from the remote network node, the data comprising an International Mobile Subscriber Identity, IMSI, allocated to the terminal device, provisioning the terminal device based on the received data over the control plane, a provisioning defining at least one parameter for accessing the mobile communication network in an enhanced access mode, the at least one parameter is an International Mobile Subscriber Identity, IMSI, for accessing the mobile communication network with the enhanced access mode, and in response to a configuration re-requesting the attachment to the mobile communication network by applying the at least one parameter being the International Mobile Subscriber Identity, IMSI, to access the mobile communication network with the enhanced access mode.