Patent ID: 9160608
Filing Date: 2015-10-13
Classification: H04L,H04M

Abstract:
1. A method of processing communication sessions in a telecommunications network, each communication session having a signalling path spanning a plurality of devices including one or more intermediate network devices and at least two endpoint devices, the signaling path comprising a plurality of signalling segments, each segment being between two devices in the plurality of devices, the method comprising: receiving, via a first signalling segment for a communication session, a first signaling message comprising a first identifier associated with the communication session; transforming at least part of the first identifier using a deterministic encryption algorithm to generate a second identifier; transmitting, via a second signalling segment for the communication session, a second signalling, message comprising the second identifier to associate the second identifier with the communication session; receiving a third signalling message comprising the second identifier; transforming at least part of the second identifier from the third signalling message using an inverse of the deterministic encryption algorithm to generate the first identifier associated with the communication session; and transmitting a fourth signalling message comprising the first identifier generated from the transformation of at least part of the second identifier from the third signalling message.