Moreover, the network management entity may further be caused to perform: set, in response to the detection that the attach request carries information representing that the attachment is requested for delivering an emergency notification, an indication expressing a priority to a signal for causing the network node to operate in accordance with the emergency situation.

According to a sixth aspect, a computer program product for generating a signal indicating an emergency situation is provided, which computer program product, when executed by at least one processor, cause a network management entity to perform the method as described above in the context of the fourth aspect.

According to a seventh aspect, a system is provided, the system comprising: at least one communication device as described above in the context of the second aspect; a network management entity as described above in the context of the fifth aspect; a network node and an emergency service center.

Furthermore, the network node in the system may be implemented, for establishing a Non-IP Data Delivery functionality, with one of the following: Service Capability Exposure Function, SCEF; or Serving Gateway, SGW, and Packet Data Network Gateway, PGW.

The expression “a number of” refers herein to any positive integer starting from one, e.g. to one, two, or three.

The expression “a plurality of” refers herein to any positive integer starting from two, e.g. to two, three, or four.