Disclosed is a method for setting up a communication session to a terminal device. The method includes: receiving a registration request from the terminal device, the registration request including a unique transaction identifier for the terminal device; assigning a network slice; assigning a charging and policy scheme; and in response to an assignment of the network slice and an assignment of the charging and policy scheme for the communication session generating an acknowledgement to the terminal device. Also disclosed is a network node, to a communication system and a computer program product.