a method for handling calls to be moved within a system having an unmonitored domain and a monitored domain can include the step of upon first arrival of a call at said unmonitored domain , a context of said call based on a called number , a calling number , and any redirection number included in said call can be provided . another step of the method can include , for each movement of said call between said unmonitored domain and said monitored domain , providing a unique number to be temporarily used for said particular movement , based on said call context , while avoiding that said unique number is used to move any other call within the system at the same time . an apparatus for can be configured to facilitate performance of the method .