METHOD AND ARRANGEMENT FOR VERIFYING AN ORIGINATING ADDRESS TRANSMITTED IN A CALL REQUEST FOR THE PURPOSE OF ESTABLISHING A COMMUNICATIONS LINK IN AN IP COMMUNICATIONS NETWORK

摘要

The invention relates to a method for verifying an originating address transmitted in a call request for the purpose of establishing a communications link in an IP communications network between a user terminal of a first subscriber (A) and a terminal of a second subscriber (B). The transmitted originating address is verified before the communications link is established by way of a confirmation request of the terminal of the second subscriber (B) to the transmitted originating address and evaluation of a response to the confirmation request by the terminal of the second subscriber (B).