A method and a module for shifting a call established through a first application server in order to route it through a second application server

摘要

A method for shifting an original call established between a first user device (1) and at least a correspondent device (2) through a first application server (3) in order to route it through a second application server (4), the method comprising
- receiving a server shift instruction;
- instructing the first application server (1) to forward the original call through the second application server (4) to the first user device (1) upon receiving the application server shift instruction;
- determining that an incoming call routed from the second application server (4) to the first user device (1) has an identification information matches identification information of the original call;
- causing the first user device (1) to pick-up the incoming call routed from the second application server (4) to the first user device (1) upon determining that the identification information matches.