METHOD AND DEVICE FOR TESTING PASS NORMALITY IN TIME-DIVISION CHANNEL DEVICE

摘要

PROBLEM TO BE SOLVED: To always monitor the normality of all channel passes even in speaking by inserting a test data pattern to an input part during the period of a silent data pattern and extracting the test data pattern from an output part. ;SOLUTION: A silent data pattern detecting/test data pattern inserting part 4 extracts a silent data pattern in each time slot unit of each pass and inserts a test data pattern generated by a test data pattern generating part 7 based upon an instruction outputted from a test control part 9. Then a test data pattern extracting/silent data pattern inserting part extracts a test data pattern in each time slot unit of each pass, sends the extracted data pattern to a storage part 6 and inserts a silent data pattern generated by a silent data pattern generating part 8. The control part 9 reads out the test data pattern of each pass stored in the storage part 6 and compares the read pattern with a normal test data pattern to decide the normality of the pass.;COPYRIGHT: (C)1997,JPO