1     Introduction and scope
        1.1     General
        1.2     Parameters to be measured
        1.3     Accuracy requirements of measurements
 2     References
 3     Abbreviations
 4     Measurement architectures
        4.1     General considerations and measurement methodologies
        4.2     Performance parameters and measurement architectures
        4.3     Loopbacks
        4.4     Summary of measurement architectures
 5     Measurement method using controlled and monitored source and controlled and monitored sink (C,M/C,M)
        5.1     General assumptions and constraints
        5.2     Test devices
        5.3     Trial sequences
        5.4     Trial failures and recovery
        5.5     Matching packet level reference events
        5.6     Testing during service outages
        5.7     Access trial
        5.8     Data transfer trial
        5.9     Disengagement trial
       5.10     Estimating availability parameters
 6     Method for synchronizing equipment
        6.1     Equipment synchronization
Annex A  –  Calculation of packet-switched network performance statistics
        A.1     Statistics
        A.2     Statistical formulas
        A.3     Throughput measurement correction factor
Annex B  –  Factors which may affect measured performance
        B.1     Signalling rates
        B.2     Data Link Layer window size
        B.3     Packet Layer window size
        B.4     Packet length
        B.5     Other virtual connections
        B.6     Time of day
        B.7     Throughput class
        B.8     D-bit usage
        B.9     Inter-packet gaps
       B.10     Reporting multiple tests made between different locations
Annex C  –  Examples of measurement uses
        C.1     Examples
        C.2     Pairwise and multiple comparisons