Method and Communication System for Activating a Feature of a Communication Terminal

摘要

Activating a feature of a first communication terminal, includes registering first address information that specifies the first communication terminal based on an incoming transmission at the first communication terminal or at a connection controller assigned to the first communication terminal, registering second address information that specifies a sender based on the incoming transmission, checking whether the registered second address information has been assigned for the first address information, and activating the feature when the checking returns a positive result.