CONTENTS

 1     Introduction
 2     Scope
 3     References
 4     Terms and definitions
 5     Abbreviations and acronyms
 6     ISDN CSCT NP/QOS parameters
 7     Measurement methods for ISDN CSCT NP/QOS parameters
        7.1     Measurement methods applicable
        7.2     Comparison of three measurement methods in terms of measurable performance parameter
        7.3     Characteristics of each measurement method
                  7.3.1     Test call based measurement
                  7.3.2     CDR based measurement
                  7.3.3     INMD based measurement