Abstract: The invention relates to techniques for terminating a call to a user in a mobile telecommunication network having a circuit switched CS access and service execution centralized in IP Multimedia Subsystem IMS. It is proposed to send the IMSI number of the user to the IMS during a registering of the user in the IMS, preferably with the SIP REGISTER message. Further when a call terminating request is received in the IMS, a SIP INVITE is generated and the IMSI number is provided to the MSC Server. The MSC server contacts the VLR for the purpose of call termination and in case the user is not found in the VLR, a restoring procedure is performed by contacting a HLR using the IMSI number and by providing the user's data to the VLR. The restoring procedure may be performed by means of the MAP restore procedure.

Abstract: A technique for managing call-routing numbers in a mobile communication network using a distributed switching system is provided. The switching system embodies a cluster configuration, wherein at least one cluster of the switching system comprises a plurality of cluster members, each of which is capable of routing an incoming call based on a call-routing number temporarily associated with the call. A defined series of call-routing numbers is distributed between the plurality of cluster members. The management technique makes use of a common data structure which defines an amount of assignments equal to the length of a given series of call-routing numbers, wherein each assignment uniquely associates a cluster member with one or more least significant digits of the numbers of the number series.

Abstract: A technique for managing call-routing numbers in a mobile communication network using a distributed switching system is provided. The switching system embodies a cluster configuration, wherein incoming at least one cluster of the switching system comprises a plurality of cluster members, each of which is capable of routing an incoming call based on a call-routing number temporarily associated with the call. A defined series of call-routing numbers is distributed between the plurality of cluster members. The management technique makes use of a common data structure which defines an amount of assignments equal to the length of a given series of call-routing numbers, wherein each assignment uniquely associates a cluster member with one or more least significant digits of the numbers of the number series.

Abstract: This invention relates to the field of Telecommunications, in specific to a distribution mechanism for distributing calls within a Mobile Switching Center Server Blade Cluster. In particular, a method and a corresponding distributor entity for providing scalability and redundancy in blade cluster comprising a plurality of server blades of a telecommunication system are disclosed. The method comprises the steps of receiving a message of a subscriber comprising a unique subscriber identifier determining by use of the unique subscriber identifier a first value and determining by said first value a first server blade of said blade cluster, Further, by use of the unique subscriber identifier a second value is determined and by use of said second value a second server blade of said blade cluster, whereby the first server blade is excluded from being determined.

Abstract: This invention relates to the field of Telecommunications, in specific to a distribution mechanism for distributing calls within a Mobile Switching Center Server Blade Cluster. In particular, a method and a corresponding distributor entity for providing scalability and redundancy in blade cluster comprising a plurality of server blades of a telecommunication system are disclosed. The method comprises the steps of receiving a message of a subscriber comprising a unique subscriber identifier determining by use of the unique subscriber identifier a first value and determining by said first value a first server blade of said blade cluster, Further, by use of the unique subscriber identifier a second value is determined and by use of said second value a second server blade of said blade cluster, whereby the first server blade is excluded from being determined.