METHOD AND CONTROLLER FOR ROUTING CALLS WITHIN PRIVATE NETWORKS DISTRIBUTED AMONG GEOGRAPHICALLY DISTANT ZONES

摘要

Control unit characteristic memory (CCM) in zone (ZA) stores the network identifier of the private network (PN) in which the zone specific control unit (GK) and corresponding subscriber terminals (EP) are connected. A PN configuration determination unit (PNDM) determines the PN configuration of identified PN with respect to control units of terminals in other zones (ZB,ZC) and stores it in memory. Independent claims are also included for the following: (a) Communication system; (b) Call routing method