Abstract: The invention relates to a method of handling charging data in a first network entity of an IP-based network. The first network entity receives an IP communication control message comprising user identification data and an associated encryption key. Charging data associated with a communications activity related to said user identification data is encrypted using the encryption key and combined with the user identification data to obtain a charging record with encrypted charging data which charging record is transmitted to a second network entity having the role of charging gateway function. The second network entity receives the charging record with encrypted charging data and subjects the encrypted charging data to a decryption process to obtain a charging record comprising the user identification data and unencrypted charging data.

Abstract: The invention relates to a method of listening, in real-time and by message recipient, of voicemail messages being recorded. The method comprises receiving a request for establishment of a first connection with a calling party terminal. In response to this request, the method comprises sending a command for establishing this first connection between the calling party terminal and a storage entity, i. e., a voicemail server. This command comprises a parameter for triggering the establishment of a second connection. The method also comprises receiving via this second connection information being transmitted over the first connection, i. e., the message being recorded.

Abstract: Methods, systems and network nodes for performing a SIP transaction are provided. In one exemplary embodiment, a method, performed by a second node of sending a Session Initiation Protocol (SIP) message in a SIP-based communications network from a first node to a third node using the second node, may include receiving, by the second node acting as a SIP proxy, from the first node, the SIP message. Further, the method may include determining routing information for forwarding the SIP message to the third node. Also, the method may include sending, by the second node, to the first node, a pivot request to request that the first node forward the SIP message directly to the third node without traversing the second node.

Abstract: A method comprises the steps of establishing a call between a first user equipment and a second user equipment, acquiring the identity of the second user equipment, and providing the identity of the second user equipment to the first user equipment. The invention has the advantage that it enables a law enforcement agent (for example a police officer or investigator) to track the equipment that is used by a person for a particular call. When a suspect call is received, a law enforcement agent can easily return a call to that phone, even when the SIM card of that phone is swapped. When placing a call to a suspect number, the law enforcement officer can easily determine on which device the call is answered and then determine which other persons (MSISDNs) have been using that device.

Abstract: Method, telephony server and message recording system for handling a call from a calling subscriber towards a called subscriber associated with a telephony server in a communications network. When the call is not answered by a user equipment of the called subscriber the telephony server establishes a media connection between the calling subscriber and the message recording system. The telephony server controls a recording process of a message by the message recording system. The telephony server receives, from the message recording system, a reference to the recorded message.

Abstract: Method and system for transferring a message, comprising routing information relating to the intended recipient of the message and content information, from a first node via a second node to a third node in a communications network. According to the invention, a repository is associated with the second node. The method comprises the steps of: transmitting the message from the first node to the second node; storing data representative of the content information in the repository of the second node; replacing, by the second node, in the message, the content information by a token; transmitting the message, comprising the routing information and the token, from the second node to the third node; retrieving, by the third node, the content information from the second node; and replacing by the third node, in the message, the token by the content information.

Abstract: A user terminal in a telecommunications network includes a circuit-switched (CS) telephony device and a packet-switched (PS) data processing device. The CS telephony device receives a CS-alert signal from the network for an incoming CS call and derives from the CS-alert signal that an associated PS signal is to be expected within a predetermined time interval. The terminal postpones generation of a call-received alarm for a user during the predetermined time interval. The PS data processing device receives the associated PS signal within the predetermined time interval, wherein the PS signal includes a request that the user terminal automatically answer the incoming CS call. In response to the request, the PS data processing device passes a control signal to the CS telephony device causing the CS telephony device to switch to an automatic answering mode and transmit a CS-answer signal to the network without input from the user.

Abstract: Method and network node for monitoring a quality of media transfer in a SIP based VoIP communications network comprising a first and second network node. The method includes the step of collecting, by the first network node, information representative of the quality of media transfer on the user plane, such as information included in one or more RTCP messages related to that media transfer, and including, by the first network node, in a SIP message said information representative of the quality of media transfer on the user plane. The method further includes transmitting the SIP message from the first network node to the second network node, and storing in a repository associated with the second network node the information representative of the quality of media transfer on the user plane.

Abstract: Method, system and network nodes for performing a SIP transaction, such as a SIP Invite transaction, in a Session Initiation Protocol based communications network from a first node to a third node via a second node. The second node acts as a proxy that receives a SIP message from the first node and, instead of forwarding the message to the third node, transmits a pivot request to the first node requesting the first node to forward the message directly to the third node. The first node forwards the message directly to the third node, and during the remainder of the SIP transaction further SIP messages are exchanged between the first and third node directly.

Abstract: Method and gateway unit for registering a user terminal (34) of a multimedia subscriber being a subscriber of a circuit switched network (32), in an IP multimedia system (IMS) network (31). Registration in the IMS network (31) of a first contact address associated with a circuit switched communication capability of the user terminal (34) for regular communication purposes is used, as well as registration in the IMS network (31) of a second contact address associated with a circuit switched communication capability of the user terminal (34) for messaging purposes.

Abstract: The invention relates to a method and a media handling unit (8) for switching from forwarding a first media stream to forwarding a second media stream to a media recipient (2) in a VoIP based communications network. According to the invention, the first and second media streams are buffered in memory (14,16) prior to switching, providing slack time to allow switching without disturbance.

Abstract: Systems and methods of transferring a message in a Session Initiation Protocol (SIP)-based communications network, from a first node to a third node using a second node are provided. In one exemplary embodiment, a method of registering in an Internet Protocol Multimedia Subsystem (IMS) communications network, a User Agent (UA) using a Proxy Call Session Control Function (P-CSCF) entity with a Serving Call Session Control Function (S-CSCF) entity may include determining a first group identifier associated with a plurality of P-CSCF entities. Based on the first group identifier, the method may include selecting a network address corresponding to one of the plurality of P-CSCF entities. Further, the method may include storing subscriber data in a repository associated with the selected P-CSCF entity.

Abstract: The invention relates to a method, network ad network entity for establishing a communication session between a calling subscriber residing in a first Visited IMS network and a called subscriber roaming in a second Visited IMS network. The method includes routing a first Invite request for the communication session via a media path extending from the first Visited IMS network via a Home IMS network of the called subscriber to the second Visited IMS network, and establishing the communication session. The method further includes inserting an additional IMS network entity, residing in the second Visited IMS network, in the part of the media path extending from the first Visited IMS network to the Home IMS network of the called subscriber and removing the Home IMS network of the called subscriber from the media path.

Abstract: Method and system for transferring a message, comprising routing information relating to the intended recipient of the message and content information, from a first node via a second node to a third node in a communications network. According to the invention, a repository is associated with the second node. The method comprises the steps of: transmitting the message from the first node to the second node; storing data representative of the content information in the repository of the second node; replacing, by the second node, in the message, the content information by a token; transmitting the message, comprising the routing information and the token, from the second node to the third node; retrieving, by the third node, the content information from the second node; and replacing by the third node, in the message, the token by the content information.

Abstract: Charging data for a call in an IP telecommunications network is generated by establishing a direct SIP connection between a SIP-AS and an MGCF; defining in the SIP-AS service related data corresponding to the call; submitting the defined service related data in SIP signalling via the established direct SIP connection between the SIP-AS and the MGCF; and generating in the MGCF the charging data, based on the submitted service related data.

Abstract: Method, server (13) and system for providing a Network Multimedia Content Component, NMCC, service during a multimedia session (14), between a first party (11) and a second party (12) in an Internet Protocol Multimedia Subsystem, IMS, the multimedia session (14) comprising a plurality of multimedia content components (15, 16), the method comprising the steps of receiving, by the server (13), a network drop message (17) from the IMS network of a network drop of at least one (16?) of the multi-media content components (15, 16) of the multimedia session (14) for the first party (11), and providing, by the server (13), to the first party (11), in response to the network drop message (17), at least one network multimedia content component (18) of a same content type as the at least one dropped multimedia content component (16?).

Abstract: A method (10) of and a server (60) and telecommunication system (30) for establishing communication (11) from a first party (31) having a first party identity to a second party (32) having a second party identity, wherein said first party identity is withheld for said second party (32). A token or correlation identifier (67) unique for the communication is generated (15), and the token or correlation identifier (67) is associated (16) with the first party identity for establishing a further communication in the telecommunication system (30) between the first party (31) and the second party Calling party (32) based on this token or correlation identifier (67).

Abstract: Method and gateway unit for registering a user terminal (34) of a multimedia subscriber being a subscriber of a circuit switched network (32), in an IP multimedia system (IMS) network (31). Registration in the IMS network (31) of a first contact address associated with a circuit switched communication capability of the user terminal (34) for regular communication purposes is used, as well as registration in the IMS network (31) of a second contact address associated with a circuit switched communication capability of the user terminal (34) for messaging purposes.

Abstract: Method, device, network and network entity for providing at least one Internet Protocol, IP, service application from a subscriber's multimedia device in an IP multimedia network. The method comprises executing at least one IP service application on the device and/or on an auxiliary device associated with the device. A Domain Name System, DNS, service is provided being executed on the device the DNS service relating to a domain associated with the subscriber. The DNS service has a memory associated therewith. In the memory information is stored relating to DNS resource records in accordance with the at least one IP service application that is being executed on the device and/or in the auxiliary device at that moment. An indication of the device's capability to execute a DNS service is deposited with the IP multimedia network. The indication comprises a network address on which the DNS service can be reached for a DNS query.

Abstract: A first end node obtains trace information in a packet switched network. The first end node sends a request message for setting up a test call towards a second end node. The request message includes a first request for collecting trace information. The second end node sends a first response message, to the first end node, that includes a trace request and trace information. The first response message is routed between the second and first end nodes via at least a first intermediate node that adds additional trace information relating to the first intermediate node to the trace information of the first response message. The first end node receives the first response message, which includes the additional trace information added by the first intermediate node.