Patent ID: 6181938
Filing Date: 2001-01-30
Classification: H04W

Abstract:
A method for performing location updating of a dual or multi mode terminal (DMT) in the telecommunication network, which comprises:a first type switched telephone network (PSTN), comprising at least one first switching system (LE);a second type mobile telephone network (GSM PLMN) supporting extensive subscriber mobility, comprising at least one second switching system (MSC);a third type telecommunication network (PISN) supporting limited subscriber mobility, comprising at least one third switching system (G-PABX); andin which telecommunication network a service switching point (SSP) of the intelligent network is arranged in connection with the second switching system (MSC) or the subscriber location register (VLR/HLR) connected to that or in connection with the first and second switching systems (LE, MSC), from which service switching point (SSP) a connection is arranged to the service control point (SCP) of the intelligent network;characterized in that the mobile terminal (DMT) in connection with location updating:if the second switching system (MSC) receives a location update message from the mobile terminal (DMT) the second switching system (MSC), or the subscriber location register (VLR/HLR) connected to it, transmits a service request to the service switching point (SSP) of the intelligent network, from where it is transmitted further to the service control point (SCP), said service request including an identifier and/or a number of the mobile terminal (DMT);if the third switching system (G-PABX) receives a location update message from the mobile terminal (DMT) it transmits the location update message to the first or second switching system (LE, MSC) which in its turn transmits a service request to the service switching point (SSP) of the intelligent network, from where it is transmitted further to the service control point (SCP), said service request including information about the location update; the identifier and/or number of the mobile terminal (DMT) and the routing address to the third switching system (G-PABX);in response to the service request the switching node (SCP) of the intelligent network stores the routing information concerning the location of the mobile terminal (DMT) indicated in the service request.