Patent ID: 6628950
Filing Date: 2003-09-30
Classification: H04M,H04W

Abstract:
Method of control of calls in a mobile telecommunications network comprising at least, mobile stations and mobile services switching centres and whereinconnections can be set up between mobile stations and mobile services switching centres, mobile services switching centres may set up connections outside the mobile telecommunications network via network elements (GMSCA), information is maintained on a subscriber's location, the method comprising: determining if calls are barred to a called subscriber when the called subscriber is outside his home network, defining a set of allowed network elements (GMSC) based on subscriber location information, and when a call is set up: comparing location information of a calling subscriber's network element (GMSCA) with location information of a called subscriber network element (VLRB), comparing location information of a calling subscriber's network element (GMSCA) with the set of allowed network elements (GMSC) relating to the called subscriber's current location, and if calls are barred to a called subscriber when the called subscriber is outside his home network, and if the first comparison shows that the location information of the calling subscriber's network element is the same as the location information of the called subscriber's network element, and if the second comparison shows that the calling subscriber's network element (GMSCA) belongs to the set of allowed network elements (GMSC), then bypassing the said barring of the incoming call and relaying the call to the called subscriber.