CONTENTS

 1     General
 2     Characteristics of interfaces
        2.1     Interface characteristics common to digital interfaces
        2.2     Interface characteristics at interface A
                  2.2.1     Jitter and wander tolerance at the exchange input
                  2.2.2     Maximum time interval error (MTIE) at the exchange output
        2.3     Interface characteristics at interface B
                  2.3.1     Jitter and wander tolerance at the exchange input
                  2.3.2     Maximum Time Interval Error (MTIE) at the exchange output
        2.4     Interface characteristics at interface V1
        2.5     Interface characteristics at other V-type interfaces
 3     Characteristics of 64 kbit/s half connections
        3.1     Half connection characteristics common to all digital interfaces
                  3.1.1     Error performance
                  3.1.2     Bit integrity
                  3.1.3     Bit sequence independence
                  3.1.4     Absolute group delay