Abstract: A network device is configured to implement an Identity Event Function, IEF, (16) for lawful interception, LI, of communications in a wireless communication network (12). The network device detects an event that comprises a change in an association between a long-term subscription identifier and a temporary subscription identifier for a wireless communication device (14). Responsive to detecting the event, the network device generates a record (22) that indicates the long-term subscription identifier associated with the event and the temporary subscription identifier associated with the event. The network device transmits the record (22) to an Identity Caching Function, ICF, (18) configured to cache associations between long-term subscription identifiers and temporary subscription identifiers. The network device also transmits, to the ICF (18), information indicating that the record (22) is associated with the IEF (16).

Abstract: A lawful interception provisioning function, LIPF (113) and a system information retrieval function, SIRF (114), communicate with each other via the X1 and X2 protocols. The LIPF (113) obtains, from the SIRF (114), information pertaining to a network function, NF(107), which is an instance of a virtual network function, VNF, in a telecommunication 5network (100), where said information is unrelated to any LI target and any task associated with a point of interception, POI (135), in the NF (107).

Abstract: A method for providing lawful interception, LI, in a radio communication system (500) with network slices, NSs, (520, 530, 540). The method comprises: providing a broker LI provisioning function, bLIPF (508) connected to an LI centralized function, LICF, (506), and to at least one slice LI provisioning function, sLIPF, (528, 538, 548) implemented on one of the NSs; receiving an LI target identity, if the LICF determines that a party of a network service provided using a network function, NF, (522, 524, 526, 532, 534, 536, 542, 544, 546) running on the one of the NSs has the LI target identity; and conveying the LI target identity from the bLIPF to the at least one sLIPF, wherein the at least one sLIPF activates a point of interception, POI, (522p, 524p, 526p, 532p, 534p, 536p, 542p, 544p, 546p) associated with or embedded in the NF to intercept data.

Abstract: Methods and devices provide lawful interception (LI) using slice-based mediation and delivery functions (sMDFs) and providing network slices configured for performing LI functionality as required. A network slice of a radio communication system is selected if configured to execute an sMDF. If a party to a service delivered using a network function (NF) implemented on the selected slice is indicated as being an LI target, then LI data intercepted from the NF is forwarded to the sMDF within the selected slice. The sMDF then reformats and transmits the LI data outside the network slice.

Abstract: A method and apparatus for performing Lawful Interception in a communications network. An Access Transfer Control Function (ATCF) receives an activation message instructing lawful interception. The activation message includes a subject identity. The ATCF sends intercept related information to a Mediation Function at a Lawful Intercept node. The intercept related information relates to a communication session in which the subject participates.

Abstract: The present invention relates to methods and arrangements to perform monitoring-continuity in case of number portability in a telecommunication system. The method comprises a step wherein a monitored user (B) requires number portability from an operator of a donor network (DNW) to an operator of a recipient network (RNW). The method further comprises the receiving of a number portability event—temporary address (NPE1) to an agency controlled receiving entity (LEMF, ADRS), which event (NPE1) comprises information related to the user's ported identity and the user's new identity.

Abstract: A method and apparatus for performing Lawful Interception in a communications network. An Access Transfer Control Function (ATCF) receives an activation message instructing lawful interception. The activation message includes a subject identity. The ATCF sends intercept related information to a Mediation Function at a Lawful Intercept node. The intercept related information relates to a communication session in which the subject participates.

Abstract: Methods and devices for controlling a set-up of a call from a calling entity (CE201) to a called entity in a telecommunications network are described. The telecommunications network comprises a service control entity (SCE205) and a service switching entity (SSE204). The service control entity (SCE205) is adapted to perform the steps of receiving from the service switching entity (SSE204) an indication that the first call attempt failed, receiving from the service switching entity (SSE204) an indication of the further call attempt, obtaining call information related to the first call attempt, determining a call establishment procedure for the further call attempt based on the call information related to the first call attempt, sending an instruction to the service switching entity (SSE204) to continue the set-up of the further call attempt according to the call establishment procedure.

Abstract: The invention relates to a method for controlling a multi party call between three or more communication entities within a communications network. The communications network comprise a service control entity and a service switching entity. The service control entity performs: a) receiving a notification of a multi party event associated with the multi party call from the service switching entity, b) determining a procedure for handling the multi party event, c) transmitting instructions to the service switching entity in accordance with the procedure for handling the multi parry event.

Abstract: Rerouting, as specified by ITU-T Q.730 is a network service that is executed by and under control of switching nodes, whereas IN services are executed under the control of a service control entity and invoked for certain calls only. Because of the two levels of control that are also separate from each other, inconsistencies may occur when an IN service is invoked for a call that may be in addition subject to rerouting. This problem is solved-in that a service control entity is adapted to perform the steps of receiving information relating to the rerouting of the call from the service switching entity, selecting a rerouting procedure for the call according to the received information, and sending an instruction to the service switching entity to continue the call according to the rerouting procedure. The information relating to the rerouting of the call information is in particular information about a rerouting capability of a preceding switching node.

Abstract: The present application relates to monitoring non-local originating calls in a telecommunication system having a local network part and a non-local network part. A monitoring centre is attached to an Intercept Access Point in the local network part. A monitoring request comprising an external target identification is received from the monitoring centre to the Intercept Access point. A call is set-up of from an originating subscriber in the non-local network part, towards the local network part. An Initial Address Message comprising the originating subscriber's identity is received to the Intercept Access point from the non-local network part. A match is found between the Initial Address Message and the received target identification. Monitoring information related to the matched target is transferred from the Intercept Access Point to the monitoring centre.

Abstract: Methods and devices for set-up of a call in an intelligent network (300) comprising a switching entity (SE-31,SE10,SSF) and a control entity (CE-31,CE10,SCP) are described. The call is subjected to a control by the control entity (CE-31,CE10,SCP) and the control entity (CE-31,CE10,SCP) is adapted to perform the steps of obtaining (S510) information indicating a status of a bearer for the call, determining (S520) a bearer establishment procedure for the call by analyzing the obtained information indicating the status of the bearer and at least one requirement related to the call, and sending (S530) an instruction to the switching entity (SE-31,SE10,SSF) to initiate an establishment of the bearer for the call according to the determined bearer establishment procedure.

Abstract: The present invention relates to methods and arrangements to perform monitoring-continuity in case of number portability in a telecommunication The method comprises a step wherein a monitored user (B) requires number portability from an operator of a donor network (DNW) to an operator of a recipient network (RNW). The method further comprises the receiving of a number portability event—temporary address (NPE1) to an agency controlled receiving entity (LEMF, ADRS), which event (NPE1) to an agency controlled receiving (NPE1) comprises information related to the user's ported identity and the user's new identity.

Abstract: The present application relates to monitoring non-local originating calls in a telecommunication system having a local network part and a non-local network part. A monitoring centre is attached to an Intercept Access Point in the local network part. A monitoring request comprising an external target identification is received from the monitoring centre to the Intercept Access point. A call is set-up of from an originating subscriber in the non-local network part, towards the local network part. An Initial Address Message comprising the originating subscriber's identity is received to the Intercept Access point from the non-local network part. A match is found between the Initial Address Message and the received target identification. Monitoring information related to the matched target is transferred from the Intercept Access Point to the monitoring centre.

Abstract: Methods and devices for controlling a set-up of a call from a calling entity (CE201) to a called entity in a telecommunications network are described. The telecommunications network comprises a service control entity (SCE205) and a service switching entity (SSE204). The service control entity (SCE205) is adapted to perform the steps of receiving from the service switching entity (SSE204) an indication that the first call attempt failed, receiving from the service switching entity (SSE204) an indication of the further call attempt, obtaining call information related to the first call attempt, determining a call establishment procedure for the further call attempt based on the call information related to the first call attempt, sending an instruction to the service switching entity (SSE204) to continue the set-up of the further call attempt according to the call establishment procedure.

Abstract: The invention relates to a method for controlling a multi party call between three or more communication entities within a communications network. The communications network comprise a service control entity and a service switching entity. The service control entity performs: a) receiving a notification of a multi party event associated with the multi party call from the service switching entity, b) determining a procedure for handling the multi party event, c) transmitting instructions to the service switching entity in accordance with the procedure for handling the multi parry event.

Abstract: The invention relates to a method for transmitting connected line information to a calling entity in a telecommunications network. A first connection between a calling entity and a first remote entity has been disconnected. The telecommunications network comprises a service control entity and a service switching entity. The service switching entity performs:—receiving a first instruction from the service control entity to establish a second connection between the calling entity and a second remote entity,—receiving a second instruction from the service control entity comprising a connected line notification indicator, receiving an indication that the second connection between the calling entity and the second remote entity has been established comprising connected line information of the second remote entity. The method further comprises—based on the connected line notification indicator sending towards the calling entity a message comprising the connected line information of the second remote entity.

Abstract: Rerouting, as specified by ITU-T Q.730 is a network service that is executed by and under control of switching nodes, whereas IN services are executed under the control of a service control entity and invoked for certain calls only. Because of the two levels of control that are also separate from each other, inconsistencies may occur when an IN service is invoked for a call that may be in addition subject to rerouting. This problem is solved-in that a service control entity is adapted to perform the steps of receiving information relating to the rerouting of the call from the service switching entity, selecting a rerouting procedure for the call according to the received information, and sending an instruction to the service switching entity to continue the call according to the rerouting procedure. The information relating to the rerouting of the call information is in particular information about a rerouting capability of a preceding switching node.

Abstract: Methods and devices for controlling a call in a telecommunications network are described. The telecommunications network comprises a service control entity (SCP204), a service switching entity (SSSF203) and a switching node (MSC205). The call is subject to a first service invoked for a first call party (CP201) and provided by the service control entity (SCP204), and to a second service invoked for a second call party (CP207) and provided by the switching node (MSC205). The service control entity (SCP204) performs the steps of receiving (239) a message comprising an indication of an invocation of the second service from the service switching entity (SSF203), selecting a procedure for handling the invocation of the second service based on a knowledge about the second service and a knowledge about the first service, and sending (240) an instruction to the service switching entity (SSF203) according to the procedure for handling the invocation of the second service.

Abstract: The invention relates to a method for controlling an explicit call transfer during a call in a telecommunications network comprising a switching node and an intelligent network, the intelligent network comprising a service control entity and a service switching entity. The service switching entity detects that explicit call transfer is invoked, and then sends a report to the service control entity indicating that explicit call transfer took place for the call. The report may comprise the call transfer number and a call transfer phase indicator indicating whether the call is active or in alerting state. The service control entity receives the report and will control the call transfer depending on the report.