Patent ID: 6522655
Filing Date: 2003-02-18
Classification: H04Q,H04W

Abstract:
A method of implementing a call in a telecommunications system, the call being routed from a first transceiver to a second transceiver via a first switching centre and a second subsequent switching centre, the method comprising:including in a call setup message from the first switching centre to the second switching centre an address of said first switching centre; intercepting the call setup message at a telecommunications node intermediate to the first and second switching centres; replacing the address of the first switching centre in the setup message from the first switching centre with an address of the intermediate node; forwarding the call set up message transmission to the second switching centre; and sending a response message including call set up information and using end to end signalling from said second switching centre, said response message using said substitute address of the intermediate node and being terminated in the intermediate node.