Integrating a communication terminal as the preferred device in a static communication system configuration

A communication system for integrating at least one first communication terminal assigned to a user as a preferred device in a static configuration of the communication system and/or for dynamically switching from a first communication terminal used as a preferred device to a second communication terminal as a preferred device for providing a one-number service using the preferred device, to which a one-number service number is assigned, comprising:

• a first communication terminal;
• a second communication terminal;
• a control device communicatively connected to the first communication terminal and the second communication terminal;
• the control device configured to statically assign the first communication terminal to a user to provide a one number service and statically assign the second communication terminal to the user to provide the one number service;
• the control device configured to dynamically assign at least one third communication terminal to at least one virtual device to associate the at least one third communication terminal with the user for the one number service so that the dynamic assignment of the at least one third communication terminal occurs without feedback and without updating all affected monitor points of all applications associated with the one number service;
• and
• wherein the dynamic assignment of the at least one third communication terminal to the at least one virtual device is performable so that the at least one third communication terminal is dynamically assignable as a preferred device for the one number service in response to user input assigning the third communication terminal as the preferred device without device monitoring for the one number service having to be changed and without updating all affected monitor points of all applications associated with the one number service.