CONTENTS

 1     General characteristics
        1.1     Bit rate
        1.2     Timing signal
 2     Frame structure
 3     Frame alignment and CRC procedures
        3.1     Loss of frame alignment
        3.2     Recovery of frame alignment
        3.3     CRC multiframe alignment in time slot 0
        3.4     CRC bit monitoring
 4     Fault conditions and consequent actions
        4.1     Fault conditions
        4.2     Consequent actions
 5     Interfaces
 6     Jitter
        6.1     Jitter at 2048 kbit/s output
        6.2     Jitter at tributary outputs
        6.3     Jitter transfer functions