Abstract: There are provided measures for service function chain interworking. Such measures exemplarily comprise recognizing, that said terminal is roaming in said visited network, detecting, that said visited network supports utilizing service functions of said service chaining, and applying, at a control function entity controlling said service function chaining, a service function of said service function chaining to a service data flow of said terminal, said service function being determined based on information on said roaming of said terminal in said visited network.

Abstract: A method comprises receiving information at a user device about one or more types of access and associated barring configuration information. The one or more types of access may comprise programmable access classes. The method further using by the user device one or more of said types of access and respective barring configuration information when determining whether to attempt access to a network.

Abstract: A method comprises receiving information at a user device about one or more types of access and associated barring configuration information. The one or more types of access may comprise programmable access classes. The method further using by the user device one or more of said types of access and respective barring configuration information when determining whether to attempt access to a network.

Abstract: An apparatus including at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to acquire generic service policy rules to be applied to a communication of a service data flow in a communication network, wherein the generic service policy rules are to be used for routing a service data flow to and within at least one external service function or at least one external service function chain; and to provide, to an external service function providing side, the acquired generic service policy rules as information related to an intended usage of at least one external service function or at least one external service function chain in a service data flow communicated in a communication network.

Abstract: There are provided measures for service function chain interworking. Such measures exemplarily comprise recognizing, that said terminal is roaming in said visited network, detecting, that said visited network supports utilizing service functions of said service chaining, and applying, at a control function entity controlling said service function chaining, a service function of said service function chaining to a service data flow of said terminal, said service function being determined based on information on said roaming of said terminal in said visited network.

Abstract: An apparatus including at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to acquire data indicating at least one available external service function or at least one external service function chain via a predetermined interface, to decide whether at least one of the indicated at least one external service function or at least one external service function chain is usable in a communication of a service data flow in the communication network, to select at least one from the indicated at least one external service function or at least one external service function chain for use on the basis of the decision whether at least one of the advertised at least one external service function or external service function chain is usable in a communication of a service data flow, and to provide, to an e

Abstract: An apparatus including at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to acquire generic service policy rules to be applied to a communication of a service data flow in a communication network, wherein the generic service policy rules are to be used for routing a service data flow to and within at least one external service function or at least one external service function chain; and to provide, to an external service function providing side, the acquired generic service policy rules as information related to an intended usage of at least one external service function or at least one external service function chain in a service data flow communicated in a communication network.