Calling subscriber validation

Abstract

The invention relates to 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 the given operator. To enable the validation to be carried out economically and with maximum utilization of the network transmission capacity, the network of the neighbouring operator uses a given predetermined node (SW4') for calling subscriber validation, and the connection setup process is continued in the network of the neighbouring operator from an inter-network link up to the predetermined node in which validation is performed in the connection setup phase. When the validation gives a positive result (a) the already established connection is released backwards from the predetermined node up to a given predetermined exchange, and (b) redirection of the call to the desired destination is performed from the predetermined exchange.

Description

technical field [0001] The invention relates to the authentication of calling subscribers in telecommunication systems in which at least some subscribers also have access to another operator's network via their operator's network, ie via the network to which the subscribers themselves belong. Background technique [0002] With the relaxation of telecommunication regulations, some new telecommunication operators have sprung up in many countries, and they began to compete with the original operators for customers. In this case, a subscriber belonging to a certain operator's network can place a call through the other operator's network by prefixing the dialed number with a prefix number identifying the other desired operator. From the second operator's point of view, these users have indirect access to the operator's network. Hereinafter, these users will be referred to as indirectly accessed users. [0003] However, in many countries, if a user belonging to a network of cert...

AI Technical Summary

Problems solved by technology

[0011] In practice, however, intelligent network-based technologies are expensive, so this implementation of caller authentication is clearly a more expensive approach than with conventional switch-based technologies

Since verification is a very simple operation and due to the high number of verifications to be performed, it is also unreasonable to place too much load on the service control point by such operations, which are also easily achievable with switch-based technologies

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