CONTENTS

 1     Introduction
 2     Scope
 3     References
 4     Terms and definitions
 5     Abbreviations and acronyms
 6     General consideration on test call measurement for ISDN
 7     NP/QOS ISDN parameters considered
        7.1     Test call measurements to assess NP/QOS parameters for ISDN calls using 64 kbit/s UDI single channel
                  7.1.1     Call setup phase
                  7.1.2     User information transfer phase
                  7.1.3     Call disengagement phase
        7.2     Test call measurements and criteria to assess NP parameters for ISDN calls using 64 kbit/s UDI multiple channels
                  7.2.1     Assessment of NP/QOS parameters for multi-channel calls
                  7.2.2     Specific NP/QOS parameters for multi-channel ISDN communications
 8     Consideration on ISDN calls using Primary Rate Interface
Annex A -Calculation methods and procedures to derive NP/QOS parameters
Annex B - Data collection principles and statistical procedure
        B.1     Composition of ISDN speed criterion related performance parameters
        B.2     Composition of ISDN dependability criterion related performance parameters
Annex C - Statistical treatment of ISDN NP parameters