Patent ID: 6678368
Filing Date: 2004-01-13
Classification: H04M,H04Q

Abstract:
A method for calling subscriber validation in a telecommunications system which is divided into networks governed by at least two different operators and in which at least some of the subscribers connected to the network of a given operator also have access to the network of a neighbouring operator through the network of said given operator, said validation being performed when the subscriber makes a call attempt to the network of the neighbouring operator, wherein in the set-up phase of such a call comprisesallocation of transmission capacity link by link starting from the exchange of the calling subscriber, whereby the connection is established to the network of the neighbouring operator through an inter-network link, performing validation for, checking whether the calling subscriber is entitled to access to said network, in a validating node of exchange-based technique in the network of said neighbouring operator, continuing a connection set-up process in the network of the neighbouring operator from the inter-network link up to said validating node, wherein when the validation gives a positive result the setup phase of such a call further comprises: releasing the already established connection backwards from said validating node up to a given exchange, and redirecting the call to the desired destination from said given exchange.