Abstract: A method for connecting, by a central control unit (CCU), a booting switch to a network. The network includes switches controlled by the CCU using control data packets that are transmitted via communications paths in the network. User packets are transmitted through the network using the same communications paths. A switch uses forwarding rules stored in a pipeline to forward packets in the network. A local port in each switch provides access to the pipeline. The paths in the network for the control data packets are established by storing forwarding rules configured by the CCU in the pipelines of the switches. At least one switch contains a connecting port via which the booting switch is connected to the network. The forwarding rules in the booting switch are stored by the CCU using a temporary path, which contains the existing path and a connecting path.

Abstract: A routing system transfers data packets of real time communication services of a call, and includes a converter receiving media gateway control protocol encoded first control data and processing the first control data to obtain second control data. The system, based on the first control data, allocates a first transport address for a first routing port for incoming data packets, and allocates a second transport address for a second routing port for outgoing data packets. A central control entity controls a central control entity controlled network of forwarding elements, and determines a static pathway through the network of forwarding elements based on the second control data. A first end of the static pathway corresponds to the first routing port and a second end corresponds to the second routing port. The central control entity controls a data plane flow of a stream of the data packets along the static pathway.

Abstract: The invention relates to a method for controlling the activation of a voice activity detector for a call in which music control information inserted into the control signalling plane is used to disable and enable the voice activity detector.

Abstract: The invention provides for a dynamic transcoder placement in case that transcoding functionality for codecs is offered in a TRAU associated to a Base Station Controller and/or a MGW selected for a call.

Abstract: A system and method of negotiating Media Gateways (MGs) between a plurality of call control nodes (CCNs). The system includes a first CCN which builds an original list of identifiers associated with at least one MG capable of being used in a call by the first CCN. The system also includes a second CCN for receiving the original list of identifiers from the first CCN. The second CCN removes from the original list any identifiers associated with any MG in the original list of identifiers which is not capable of being used in the call by the second CCN. The second CCN then forms a modified list of identifiers associated with at least one MG capable of being used in a call by the first CCN and the second CCN. The second CCN also selects a specified MG from the modified list and sends a first backward message from the second CCN to the first CCN identifying the specified MG. The first CCN may then validate that the specified MG is on the original list of identifiers and selects the specified MG for the call.

Abstract: The invention provides for a dynamic transcoder placement in case that transcoding functionality for codecs is offered in a TRAU associated to a Base Station Controller and/or a MGW selected for a call.

Abstract: The invention relates to the setting up of a connection between an originating terminal and a terminating terminal. Both terminals may connect via the same access network. The access network accesses a core network through an access gateway. The access gateway transmits and/or receives connection set-up signalling transmitted along a signalling path through at least the core network. Using an information element in the connection set-up signalling, information on media plane access needs of nodes in the signalling path is collected and provided for determining whether a local shortcut of a media path can be established in the access network.

Abstract: A method for handling, by a ring node of a network having a ring topology, a data transfer of data packets through the network via which the data packets are transmitted to their destination node, wherein each ring node has two neighbouring ring nodes. The method includes detecting data packets of an incoming data transfer received from a non ring node to be transmitted through the network to their destination node. Furthermore, a ring direction is added to the data packets of the incoming data transfer, the indication indicating in which direction the data packets of the incoming data transfer are passed through the network having the ring topology. The data packets of the incoming data transfer are forwarded to one of the two neighbouring ring nodes based on the added indication.

Abstract: The invention relates to a central control entity (100) configured to control a data plane flow of a stream of data packages in an access network part of a mobile communications network, the central control entity comprising:—a detecting unit (140), configured to detect a presence of data plane applications (300) linked to forwarding elements (200) of the access network part, configured to detect information about a type of data plane application that is to be applied to said data plane flow, and configured to detect flow information reports from forwarding elements (200) which are directly linked to one network node containing the determined type of data plane application, each flow information report from one of the forwarding elements (200) containing information about a data packet volume transmitted from said one forwarding element to said one data plane application,—a flow control unit (110) configured to determine a path of the data plane flow through the forwarding elements (200) of the access network

Abstract: A method of controlling forwarding of IP data packets through a service network. An IP data packet including an original source port number enters the network through a gateway node. A controller defines a path allocated to a service type through a forwarding node and a service-providing server allocated to the network; allocates an identifier to the service type; provides path-related forwarding rules to the forwarding node based on the identifier; and provides to the gateway node, the service-type identifier and a mapping rule between the identifier and the service type. The gateway node receives the IP data packet and determines which service type the IP data packet refers to; replaces the original source port number with a source port number encoding the identifier of the determined service type based on the mapping rule; and provides the IP data packet to the forwarding node for forwarding on the path.

Abstract: A routing system transfers data packets of real time communication services of a call, and includes a converter receiving media gateway control protocol encoded first control data and processing the first control data to obtain second control data. The system, based on the first control data, allocates a first transport address for a first routing port for incoming data packets, and allocates a second transport address for a second routing port for outgoing data packets. A central control entity controls a central control entity controlled network of forwarding elements, and determines a static pathway through the network of forwarding elements based on the second control data. A first end of the static pathway corresponds to the first routing port and a second end corresponds to the second routing port. The central control entity controls a data plane flow of a stream of the data packets along the static pathway.

Abstract: A system and method control a setup of a connection in a communication network including a set of nodes, such as Mobile Switching Centers (MSCs) and Media Gateways (MGWs). In one example, a speech connection is established between MGWs subject to the control of the MSCs, which can selectively activate or deactivate codecs along the connection. The codecs potentially affect connection quality by differing amounts. A Total Accumulated Impairment (TAI) element is forwarded between the MSCs and updated by the MSCs that include individual partially accumulated impairment values corresponding to the supported codec candidates. Each individual indicator value provides information representative of the expected accumulated impairment along a candidate connection path leading up to, and including, the corresponding codec.

Abstract: The invention relates to a central control entity (200) configured to control a data plane flow of a stream of data packages in a radio access network part of a mobile communications network. The central control entity (200) comprises an information detecting unit (210), configured to detect information about data plane applications (41-44) attached to forwarding elements (120-124; 131-134) of the radio access network part and configured to detect information about at least one data plane application (41-44) that is to be applied to said data plane flow.

Abstract: The invention relates to a method for controlling, by a central control entity (200), a topology change in a network having a ring topology with a plurality of ring nodes (110-150) via which data packets of various data transfers are transmitted to their corresponding destination nodes. The method comprising the steps of receiving information about a topology change of the ring topology of the network, determining which of the data transfers are affected by the topology change, determining, for each of the affected data transfers, a new path through the network, determining new switching instructions for ring nodes (110-150) that are affected by the new paths determined for the affected data transfers, and transmitting the new switching instructions to the affected ring nodes (110-150).

Abstract: The invention relates to the setting up of a connection between an originating terminal and a terminating terminal. Both terminals may connect via the same access network. The access network accesses a core network through an access gateway. The access gateway transmits and/or receives connection set-up signalling transmitted along a signalling path through at least the core network. Using an information element in the connection set-up signalling, information on media plane access needs of nodes in the signalling path is collected and provided for determining whether a local shortcut of a media path can be established in the access network.

Abstract: The invention relates to the setting up of a connection between an originating terminal and a terminating terminal. Both terminals may connect via the same access network. The access network accesses a core network through an access gateway. The access gateway transmits and/or receives connection set-up signalling transmitted along a signalling path through at least the core network. Using an information element in the connection set-up signalling, information on media plane access needs of nodes in the signalling path is collected and provided for determining whether a local shortcut of a media path can be established in the access network.

Abstract: A Method for controlling an establishment or a modification of a connection according to a packet based transmission scheme in a communication network (100) comprising a plurality of nodes (102-112) is proposed. The connection (113) to be established or modified comprises or utilizes one or more entities potentially causing a transmission delay for a transmission over the connection. An indicator indicating an expected accumulated delay for the connection (124) is sent between nodes controlling the connection and one of the nodes controlling the connection checks the indicator when it performs a decision on the packetisation time to be applied for the connection.

Abstract: The invention provides for a dynamic transcoder placement in case that transcoding functionality for codecs is offered in a TRAU associated to a Base Station Controller and/or a MGW selected for a call.

Abstract: A method and system of negotiating Media Gateways (MGs) between a plurality of call control nodes (CCNs). The system includes an originating CCN which builds an original list of configured Media Gateways capable of being used in a call by the originating CCN. The first CCN associates an identifier and a priority with each Media Gateway in the list prior to sending the list to a subsequent CCN. The subsequent CCN removes from the original list any identifiers associated with any MG in the original list of identifiers which is not capable of being used in the call by the subsequent CCN. The subsequent CCN then forms a modified list of identifiers associated with at least one MG capable of being used in a call by the originating CCN and the subsequent CCN. The subsequent CCN also selects a specified MG from the modified list and sends a first backward message from the second CCN to the originating CCN identifying the specified MG.

Abstract: The invention relates to a technique of operating a call control node controlling at least one section of a call path. The call path includes between two opposite edge nodes a multi-section harmonization path along which codec selection is to be harmonized. A method embodiment of the technique, wherein the call control node is a transfer node in the harmonization path between the edge nodes, comprises the steps of determining if the call control node is a transfer node of the harmonization path; determining if a codec used for the at least one section controlled by the call control node fulfills a predefined harmonization criterion; and providing, in case the used codec does not fulfill the harmonization criterion, a harmonization trigger indication to at least one of the edge nodes of the harmonization path for initiating harmonization.