Method of providing coverage extension to an existing mobile network, and corresponding system.

摘要

A system for routing a call to a UE of a mobile network is provided, where the UE has set up a call diversion service with a phone number when it is out of reach of the mobile network. The phone number is associated with a gateway interconnecting the mobile network with a VoIP platform, which comprises an ingress gateway receiving incoming traffic corresponding to the call to be routed. The ingress gateway comprises:
- A parser, which detects within the incoming traffic an identifier of the UE along with a call diversion condition;
- A checking unit for checking, on the basis of the identifier, an eligibility criteria of the UE to the routing, and an analyser for examining the call diversion condition;
- A forwarding unit for forwarding the call to a VoIP proxy server, when the call diversion condition indicates that the UE is out of reach of the mobile network, and when the user equipment is eligible to the routing.