the exploration of central lines in a telecommunication

摘要

Apparatus and method for collecting and processing line state information. The apparatus includes a line scanner, storages for present line state, former line state and line active-idle status, comparison means to detect change in line state and selector means to transmit the detected changes alternatively for lines of active or idle status, and separate queus under the control of an active-idle line status input control for storing the results of the change detector according to the status of the lines being scanned. The apparatus facilitates carrying out of line state change collecting and processing method wherein the change information is processed in a manner which gives priority to the information concerning active lines.