First and second users log in using respective communication devices. Address information of the communication devices are sent to respective first and second servers. At the communication device used by the first user, a graphical icon representing the second user is retrieved from the first server, and is displayed in a quick dial list of first-user-selected user identifiers on the display. The first user selects the icon to request communication with the second user. Real-time communication types are displayed on a display associated with the communication device used by the first user. In response, the first server is queried to obtain the current address information for the selected second user. The received address information is used to establish a communication type. If a communication type is selected by the first user, the real-time communication is of the selected type. Otherwise, the real-time communication is of a default communication type.