Method for providing information services in characters through ISDN

摘要

A method for providing information services to display the character information on terminals by a PBX through an ISDN, the method comprising the steps of registering a subscriber's request of character information services according to a given menu by connecting a specified port to the ISDN, determining whether corresponding terminal is registered for the character information services upon receiving a service message, and transferring the service message to be displayed in characters on the registered terminal.