Patent ID: 6570977
Filing Date: 2003-05-27
Classification: H04Q

Abstract:
A method for setting up a telecommunications connection from a calling subscriber (A) to a called subscriber (B) who is assigned to a numbering-plan area (AREA2) shared by two or more subscriber line networks (KN2, KN3, KN4) of different network operators (OP2, OP3, OP4), the method comprising:routing a call request (CR) from the subscriber line network (OP2) of the calling subscriber to a communications network (KN6) of a long distance carrier (OP6); and triggering an IN service performed by the communication network (KN6) of the long distance carrier (OP6) upon the arrival of the call request (CR) at the communications network (KN6) of the long distance carrier (OP6), wherein the IN service involves executing for the call request (CR) both an access monitoring function (SUBSC) that monitors the access to the communications network (KN6) of the long distance carrier (OP6)and a number portability function (RNPORT) that determines the subscriber line network (KN3) of the called subscriber (B).