An alarm manager on a
Web browser for transmitting alarm manager provided by NMS (
Network Management System) by simply operating as a
dynamic HTML through a
HTML document object provided by the
Web browser, without a separate loading program, and a service method thereof, and a method of providing alarm information to the alarm manager. The service method includes the steps of: creating a header frame, a contents frame, and a data frame on the
Web browser, in response to an alarm manager service from a user; requesting, at the data frame, the NMS to provide alarm information periodically, and managing the alarm information being requested when the alarm information is received; periodically checking, at the contents frame composed of
dynamic HTML, whether the alarm information in the data frame is properly managed; and obtaining, at the contents frame, the alarm information being managed by the data frame, composing the alarm information in a data table
system, and displaying the alarm information for the user to be able to confirm the alarm info.