�1���� Scope
�2����
References
�3����
Standardized test sequences
�4����
Properties of pseudo-random test sequences
������� 4.1���� Measurements through scramblers
������� 4.2���� Loss of sequence synchronization
������� 4.3���� �Framed� measurements
������� 4.4���� Jitter measurements
�5����
Digital test sequences used in the O-Series Recommendations
������� 5.1���� 511-bit pseudo-random test sequence
������� 5.2���� 2047-bit pseudo-random test sequence
������� 5.3���� 32 767-bit pseudo-random test sequence
������� 5.4���� 1 048 575-bit pseudo-random test sequence
������� 5.5���� 1 048 575-bit pseudo-random test sequence with zero
suppression
������� 5.6���� 8 388 607-bit pseudo-random test sequence
������� 5.7���� 536 870 911-bit pseudo-random test sequence
������� 5.8���� 2 147 483 647-bit pseudo-random test sequence
�6����
Description of framed test sequences at different bit rates
������� 6.1���� General
����������������� 6.1.1���� Testing digital demultiplexers
������� 6.2���� Digital frames operating at bit rates of 1544 kbit/s
����������������� 6.2.1���� 12 - Frame multiframe or superframe
����������������� 6.2.2���� 24 - Frame multiframe or extended
superframe
������� 6.3���� Digital frames operating at bit rates of 2048 kbit/s
������������ �����6.3.1���� Frames
without CRC-4 procedure and providing common channel signalling
����������������� 6.3.2���� Frames without CRC-4 procedure and
providing channel associated signalling
����������������� 6.3.3���� Frames with CRC-4 procedure and providing
channel associated signalling
������� 6.4���� Digital frames operating at bit rates of 6312 kbit/s
������� 6.5���� Digital frames operating at bit rates of 8448 kbit/s
������� 6.6���� Digital frames operating at bit rates of 32 064 kbit/s
������� 6.7�� ��Digital frames
operating at bit rates of 34 368 kbit/s
������� 6.8���� Digital frames operating at bit rates of 44 736 kbit/s
������� 6.9���� Digital frames operating at bit rates of 97 728 kbit/s
������ 6.10���� Digital frames operating at bit rates of 139 264 kbit/s
���������������� 6.10.1���� Digital frames operating at 139 264
kbit/s and multiplexing 34 368 kbit/s signals
���������������� 6.10.2���� Digital frames operating at 139 264
kbit/s and multiplexing 44 736 kbit/s signals
������ 6.11���� Digital frames operating at STM-N bit rates
�7����
Block-oriented error performance measurements
������� 7.1���� Measurement of block errors
������� 7.2���� Block sizes
����������������� 7.2.1���� Block sizes for out-of-service
performance measurements on PDH systems
����������������� 7.2.2���� Block sizes for out-of-service
performance measurements on SDH systems
����������������� 7.2.3���� Block sizes for performance measurements
on cell-based systems
�8����
Detection and clearance of AIS and LOS defects