Patent ID: 8879521

Claim:
A switch for call routing in a mobile communication network, the switch including a cluster, the cluster comprising: a plurality of cluster members, each cluster member being arranged to terminate an incoming call to a recipient subscriber served by the cluster member or to route the incoming call to another cluster member, wherein a number is associated with each incoming call, the associated number comprising at least one of a Mobile Subscriber Router Number (MSRN) and a Handover Number (HON), each cluster member having a dynamic set of numbers associated therewith, each of the numbers of the dynamic set of numbers comprising at least one of an MSRN and HON and incoming calls associated with a number from the dynamic set of numbers being terminated at the associated cluster member; a component arranged to provide a first data structure common to and accessible by all the cluster members, wherein the first data structure specifies each of the cluster members and the dynamic set of numbers associated with each of the cluster members, wherein existing MSRNs and/or HONs in the dynamic set of numbers may be deleted or changed; a component arranged to receive an incoming call by one of the cluster members; and a component arranged to determine, by the receiving cluster member, the particular cluster member to terminate the incoming call by consulting the first data structure based on the number associated with the received call.