Method, system, business and terminal for realizing convergence business

A method for merging IPTV service with communication service includes receiving relative communication service message of communication terminal by service agent entity at communication terminal network side, generating communication state informing message by said service agent entity according to binding relation message user identification of communication terminal and user identification of IPTV terminal as well as received communication service message then sending communication state informing message to IPTV terminal by said service agent entity.