... s channel error testing Bit error, coding error, frame error, CRC error and E bit error testing ... , AIS alarm, framed remote alarm, multi-framed remote alarm, out-of-frame, and pattern loss alarm Frequency offset ... analysisG. 821/G. 826/M. 2100 error analysis Multi error and alarm inserting Three input modes (terminating, ... with the requirement of G. 704(6) Testing pattern: 26-1, 29-1, 211-1, 215-1, 220 ...