PURPOSE: To reduce the barden and error of an operator by easily grasping the communication quality of end-to-end on the conditions such as by outgoing/ incoming nodes, by customers and by the class of communication and to exactly grasp it as needed by independently displaying the statistical amount of calls by repeating paths and further adding detailed information.
CONSTITUTION: A data extracting means 1f extracts only the data matched to extraction conditions from a control signal 1g to be mutually communicated among exchanges 1b-1d for deciding the connection of outgoing and incoming stations and totally converts these data to an extract signal 1h expressing call originating time, holding time and connected path, and this signal is sent to a data base 1i and a display processing means 1j. The display processing means 1j calculates the statistical amount of calls by repeating paths from the extract signal 1h, converts it into data for visibly displaying traffic and outputs them to a display device 1k. In this case, when a flag expressing a further detailed display request is raised in the extract signal 1h, the display processing means 1j adds the digital display of statistical data.
ICHIKAWA YOSHIAKI
ISHII YOSHIKAZU
