Patent ID: 7117265

Claim:
A communication system for controlling communications in a network, comprising: a server including address list managing means for storing and managing an address list including a location of each registered member, and when a member is selected by a user, dynamically generating a list of members to be called based upon a correspondence of location of the selected member and locations from the address list, data supplying means for generating data based on the list of members to be called and supplying the data on a Web site, and call connecting means for giving a call to a destination member specified on a user side, for controlling a call connection; a plurality of user terminals, each including display means for displaying a screen image of the data to be referenced on the Web site and user interface means for providing a user interface through which the destination member and a communication service type are specified and entered on the screen image; and wherein when the server receives a change of a location information during conversation, the server updates Web screens of user terminals of current conversation participants, and a name of a member whose location is changed, a previous place name, and a relocated place name are displayed in pop-up dialog on the user terminals of current conversation participants.