COMMUNICATION PATH CONNECTING SYSTEM OF CENTRALIZED SUBSCRIBER LINE TEST

摘要

PURPOSE:To connect easily the communication path by connecting and disconnecting simultaneously a voice signal channel for test and a control information channel for test. CONSTITUTION:The voice signal channel V-ch for test and the control information channel C-ch for test are provided between a centralized subscriber line test device MLTC and an adaptor LTAP for subscriber line test of a local station to which a subscriber line to be tested is connected via a relay station and a local station. The train of a relay station is set by using the V-ch as a major channel and the C-ch as a subordinate channel by means of simultaneous switching and an interstation signal for the train connection is transmitted by using an individual signal of the V-ch.