Abstract: A system and method of handling poll-based alarms. The method begins by detecting a high-priority problem in a network. Next, network elements in the network related to the high-priority problem are mapped. The mapping step includes grouping network elements into focus groups wherein each focus group includes network elements having the same alarm. The mapped network elements are then polled for alarms. The polled alarms of the network elements are then correlated and processed.

Abstract: A performance management system and method are described herein that can control which client terminal(s) (e.g., mobile terminal(s)) are to provide Quality of Experience, QoE, report(s) and also control a level of detail for the requested QoE report(s).

Abstract: A method of handling performance data comprising a set of events is described. An event record for each event is stored as a set of blocks, each block containing one or more attributes of the event. The storage space occupied by each event record in is then reduced in discrete steps, each step including a reduction process that reduces the size of one of the set of blocks. This enables the provision of intermediate records between events and counters so that new event records contain complete details of their event, older event records contain less information, and even older event records may contain only high-level (counter) information.

Abstract: A method and apparatus enabling performance monitoring in packet-switched IP networks such as those configured according to an IP multimedia subsystem, IMS, architecture. Performance is monitored by reconstructing selected control signaling sequences. The control signaling sequences, which are typically executed according a signaling protocol such as the Session Initiation Protocol, SIP, are reconstructed by parsing the contents of monitoring request headers configured, modified, and attached to control messages according to the present invention. The header includes at least an IMS monitoring ID field (510) for identifying the signaling sequence to be reconstructed, a processing node ID field (520) for representing the entities processing the messages, and a requester ID field (530) for identifying a requesting entity. It may also specify a monitoring level (540) indicative of the monitoring tasks required. The monitoring may be requested by an IMS node, or by an entity outside the IMS.

Abstract: Methods of processing record data are presented, together with a Central Management Node for processing record data, and Management Subsystem DataBases for providing a record data set and matching record data. Triggered by service related network fault event, a key table comprising at least one key type is determined, based on a focus target record and related to the network fault event is determined, which key table is used in the step matching the at least one key with record data sets in determined Management Subsystem Databases. Matched results are merged, whereafter a service performance indicator may be determined, based on which a multi-layer water flow analysis of subsystem specific performance related indicators can be obtained. This analysis may be successfully used to reveal the location of the service related network fault.

Abstract: A system and method of handling poll-based alarms. The method begins by detecting a high-priority problem in a network. Next, network elements in the network related to the high-priority problem are mapped. The mapping step includes grouping network elements into focus groups wherein each focus group includes network elements having the same alarm. The mapped network elements are then polled for alarms. The polled alarms of the network elements are then correlated and processed.

Abstract: A method is provided of regulating a load placed on a first node of a telecommunications network caused by messages sent to the first node by a second node of the network according to a signalling protocol between the first node and the second node, comprising: using a leaky bucket restrictor associated with the second node to regulate the load, the leaky bucket having an adjustable leak rate; determining a roundtrip response delay relating to at least some of the messages during a measurement period; and adjusting the leak rate in dependence upon the determined response delay.