Abstract: A mechanism is presented for performing a session transfer with Single Radio Voice Call Continuity, SRVCC, from a Packet Switched, PS, access to a Circuit Switched, CS, access of a telecommunications session that has been established over the PS access via an IP Multimedia Subsystem, IMS, network. The method includes receiving a request for the transfer of the session to the CS access. An indication of an already-seized media gateway, MGW, that has been established for use in one or more other sessions over the CS access is obtained from the IMS network. A MGW is selected as a Mobile-Media Gateway, M-MGW, for the session based on the obtained indication. Allocation of resources for the session in the CS access network is initiated, including specifying the MGW to be used as the Mobile-Media Gateway, M-MGW. Transfer of the session to the CS access is then initiated.

Abstract: A method and application server for supporting a communication established between a first mobile terminal towards a telecommunications network that includes first and second radio access networks. When a session setup is initiated with respect to the first mobile terminal, the application server receives a session identifier. The application server enters the identifier into an identifier list comprising one or more identifiers for identifying sessions with respect to the first mobile terminal. If the application server receives an indication of a session transfer from the first radio access network to the second radio access network, the application server provides the identifier list to the second radio access network in response to the indication.

Abstract: A method is provided of performing a session transfer with Single Radio Voice Call Continuity, SRVCC, from a Packet Switched, PS, access to a Circuit Switched, CS, access of a telecommunications session that has been established over the PS access via an IP Multimedia Subsystem, IMS, network. A request for the transfer of the session is received. An indication of a voice codec that is currently being used for the session is obtained from the IMS network. Allocation of resources for the session in the CS access network is initiated, including specifying the voice codec to be used based on the obtained codec indication. Transfer of the session to the CS access is initiated so that the session continues with use of the specified voice codec.

Abstract: Methods, nodes, computer programs and a mobile network for handling a terminating circuit switched signaling service to a terminal in a mobile network are described. A method of handling a terminating circuit switched signaling service to a terminal in a mobile network is described. The signaling service is distinct from a call. The mobile network comprises a first control node and a second control node. The method is performed by the first control node. The method comprises receiving signaling information for terminating the circuit switched signaling service to the terminal, subsequent to the step of receiving, detecting that the terminal has requested a location update from a second control node of the mobile network, and, based on the step of detecting, forwarding the received signaling information to the second control node.

Abstract: A method of providing in a packet switched telecommunications network, for a communications session involving a user of said packet switched telecommunications network a value added service associated with a circuit switched telecommunication network. The method comprises the steps of establishing a first signaling data stream of a first basic call state model of a packet switched dedicated protocol type between the packet switched telecommunications network and a service interface adapter unit, and establishing a second signaling data stream of a second basic call state model of a circuit switched dedicated protocol type between the service interface adapter unit and the circuit switched telecommunications network, based on information from the first signaling data stream, for providing the value added service from the circuit switched telecommunications network.

Abstract: It is presented a method for a femtocell base station, for facilitating communication between a communication terminal and a core network. The method comprises the steps, performed in the femtocell base station, of: sending a first femtocell base station message to the communication terminal; receiving a first terminal message from the communication terminal, the first terminal message comprising a first sequence number; and repeatedly sending further femtocell base station messages to the communication terminal and receiving corresponding terminal messages, comprising incremented sequence numbers, from the communication terminal, such that an expected next terminal message from the communication terminal comprises a sequence number being equal to the first sequence number. A corresponding femtocell base station, computer program and computer program product are also presented.

Abstract: A technique for controlling set up of a terminating call to a UE in a CSFB situation involving a first MSC paging the UE and a second MSC where the UE is performing a Location Update is described. A method implementation of this technique comprises receiving, from an HLR, a PRN message and forwarding information received in the PRN message to the second MSC.

Abstract: A method is provided of performing a session transfer with Single Radio Voice Call Continuity, SRVCC, from a Packet Switched, PS, access to a Circuit Switched, CS, access of a telecommunications session that has been established over the PS access via an IP Multimedia Subsystem, IMS, network. A request for the transfer of the session is received. An indication of a voice codec that is currently being used for the session is obtained from the IMS network. Allocation of resources for the session in the CS access network is initiated, including specifying the voice codec to be used based on the obtained codec indication. Transfer of the session to the CS access is initiated so that the session continues with use of the specified voice codec.

Abstract: A technique for handling mobile terminating connection attempts for a mobile terminal for which a change of an association from a first routing node to a second routing node is accompanied by a Circuit Switched (CS) fallback is described. A method implementation of this technique comprises the following steps carried out by the first routing node: receiving a first mobile terminating connection attempt to the mobile terminal, in response to receipt of the first mobile terminating connection attempt, determining that the mobile terminal cannot be reached by the first routing node, determining an identity of the second routing node, and transmitting, to the second routing node, a second mobile terminating connection attempt for a CS connection to the mobile terminal.

Abstract: A technique for coordinating the registration of a terminal (UE) in circuit-switched (CS) and packet-switched (PS) domains of a multi-operator core network (MOCN) with multiple core networks (CN) is described. According to a method approach, a notification message indicating the necessity of coordinated CS and PS registrations for a terminal (UE) is received from a first core network (CN). In a next step, and based on a global permanent identity (IMSI) associated with the terminal (UE), a second core network (CN) responsible for CS and PS registrations is determined. A registration message for coordinated CS and PS registrations is then sent to the second core network (CN) that has been determined based on the global permanent identity (IMSI).

Abstract: Apparatus for enabling interworking of Circuit Switched video calls with video calls using IP multimedia protocols, comprising: a MGW; and a MGCF; wherein the apparatus is arranged to use MONA functionality to accelerate the set-up of video calls.

Abstract: The present invention relates to a method of a femtocell base station (1), for facilitating communication between a communication terminal (8) and a core network (4). The method comprises the femtocell base station (1) receiving a first message (11) from the communication terminal (8), the message (11) comprising a first message sequence number. The method also comprises the femtocell base station (1) producing a sequence number indicator arranged to indicate to the core network (4) to adjust (22) an expected message sequence number of the core network (4) to be synchronized with a corresponding message sequence number of the communication terminal (8). The method further comprises the femtocell base station (1) sending an update message (19a) to the core network (4), wherein the update message (19a) comprises the sequence number indicator. The invention also relates to a femtocell base station (1).

Abstract: The present invention relates to a method of a serving Radio Access Network (RAN) node for facilitating communication between a communication terminal and a core network in view of a handover of the communication terminal from said serving RAN node. The method comprises receiving a first message from the communication terminal, the message comprising a first message sequence number. The method also comprises producing a sequence number synchronization indicator (SNSI) arranged to indicate to a second RAN node to adjust a message sequence number of any future message from the communication terminal before forwarding said future message to the core network, such that the message sequence number of said future message is synchronized with a corresponding expected message sequence number of the core network. The method further comprises sending an update message to the second RAN node, wherein the update message comprises the SNSI.

Abstract: The present invention relates to a method of a serving Radio Access Network (RAN) node for facilitating communication between a communication terminal and a core network in view of a handover of the communication terminal from said serving RAN node. The method comprises receiving a first message from the communication terminal, the message comprising a first message sequence number. The method also comprises producing a sequence number synchronization indicator (SNSI) arranged to indicate to a second RAN node to adjust a message sequence number of any future message from the communication terminal before forwarding said future message to the core network, such that the message sequence number of said future message is synchronized with a corresponding expected message sequence number of the core network. The method further comprises sending an update message to the second RAN node, wherein the update message comprises the SNSI.

Abstract: The present invention relates to a method of a femtocell base station (1), for facilitating communication between a communication terminal (8) and a core network (4). The method comprises the femtocell base station (1) receiving a first message (11) from the communication terminal (8), the message (11) comprising a first message sequence number. The method also comprises the femtocell base station (1) producing a sequence number indicator arranged to indicate to the core network (4) to adjust (22) an expected message sequence number of the core network (4) to be synchronized with a corresponding message sequence number of the communication terminal (8). The method further comprises the femtocell base station (1) sending an update message (19a) to the core network (4), wherein the update message (19a) comprises the sequence number indicator. The invention also relates to a femtocell base station (1).

Abstract: It is presented a method for a femtocell base station, for facilitating communication between a communication terminal and a core network. The method comprises the steps, performed in the femtocell base station, of: sending a first femtocell base station message to the communication terminal; receiving a first terminal message from the communication terminal, the first terminal message comprising a first sequence number; and repeatedly sending further femtocell base station messages to the communication terminal and receiving corresponding terminal messages, comprising incremented sequence numbers, from the communication terminal, such that an expected next terminal message from the communication terminal comprises a sequence number being equal to the first sequence number. A corresponding femtocell base station, computer program and computer program product are also presented.

Abstract: A method of facilitating monitoring of a multimedia call made up of a plurality of component parts, to enable the multimedia call contents to be identified at a predetermined location, the multimedia call originating from a location at which a first communications protocol operates and passing through at least one location where a second communications protocol operates to a destination, the method comprising the steps of: identifying the component parts of the multimedia call; removing one or more control signals from the component parts to form a call control signal for the multimedia call and a set of remaining component parts of the multimedia call; forming a multiplexed stream of the remaining component parts of the multimedia call; independently transmitting the call control signal and the multiplexed stream to the predetermined location to enable the component parts of the multimedia call to be determined in order to identify multimedia call contents.

Abstract: A method and application server for supporting a communication established between a first mobile terminal towards a telecommunications network that includes first and second radio access networks. When a session setup is initiated with respect to the first mobile terminal, the application server receives a session identifier. The application server enters the identifier into an identifier list comprising one or more identifiers for identifying sessions with respect to the first mobile terminal. If the application server receives an indication of a session transfer from the first radio access network to the second radio access network, the application server provides the identifier list to the second radio access network in response to the indication.

Abstract: A method of providing in a packet switched telecommunications network, for a communications session involving a user of said packet switched telecommunications network a value added service associated with a circuit switched telecommunication network. The method comprises the steps of establishing a first signaling data stream of a first basic call state model of a packet switched dedicated protocol type between the packet switched telecommunications network and a service interface adapter unit, and establishing a second signaling data stream of a second basic call state model of a circuit switched dedicated protocol type between the service interface adapter unit and the circuit switched telecommunications network, based on information from the first signaling data stream, for providing the value added service from the circuit switched telecommunications network.

Abstract: Apparatus for enabling interworking of CS (Circuit Switched) video calls with video calls using IP multimedia protocols, comprising: a MGW (2); and a MGCF (4); wherein the apparatus is arranged to use MONA functionality (10, 11, 12, 14) to accelerate the set-up of video calls.