�1���� Introduction and Scope������������
������� 1.1����
Introduction������
������� 1.2����
Scope�
�2����
References���
�3����
Abbreviations, acronyms and conventions����������
������� 3.1����
Abbreviations and acronyms��������
������� 3.2����
Conventions�����
�4����
Transfer capacity, capacity agreements, and the applicability of QoS
classes�������������
�5����
Network performance objectives������������
������� 5.1����
General discussion of QoS�������������
������� 5.2����
Reference path for UNI to UNI QoS������������
������� 5.3����
Network QoS classes�������
�6����
Availability objectives��������������
�7����
Achievement of the performance objectives�������
�8����
Concatenating network sections and their QoS values�������
������� 8.1���� Introduction������
������� 8.2���� Composing
UNI-UNI values���������
������� 8.3����
Impairment accumulation procedures��������
�9����
Security��������
Appendix I � ATM network QoS support of IP QoS����
Appendix II � IP delay variation parameter definition considerations����
Appendix III � Example hypothetical reference paths for validating the
IP performance objectives����
����� III.1����
Number IP nodes in the HRP��������
����� III.2����
Example computations to support end-end class 0 and class 1 delay�
����� III.3����
Example end-end class 1 delay computation�����������
����� III.4����
Example computations to support end-end class 4 delay������
���� �III.5����
Loading within the HRP
����� III.6����
Geostationary satellites within the HRP�����
Appendix IV � Example calculations of IP packet delay variation����
������ IV.1����
Contributors to IP packet delay variation�
������ IV.2����
Models and calculation procedures to establish an upper bound to the
IPDV���
������ IV.3����
Calculation examples����
Appendix V � Material relevant to IP performance measurement methods����
Appendix VI � Applicability of the Y.1221 transfer capabilities and IETF
differentiated services to IP QoS classes����
Appendix VII � Effects of network QoS on end-to-end speech transmission
performance as perceived by the user����
����� VII.1����
Example VoIP calculations with ITU-T Y.1541 class 0 network performance�
����� VII.2����
Example VoIP calculations with ITU-T Y.1541 class 1 network performance�
����� VII.3����
Speech quality calculations for ITU-T Y.1541 hypothetical reference
paths����
Appendix VIII � Effects of IP network performance on digital television
transmission QoS����
��� �VIII.1����
Introduction���
���� VIII.2����
Hypothetical reference endpoint (HRE) for high-bandwidth video signals�������
���� VIII.3����
Service profiles and end-to-end packet performance requirements����
���� VIII.4����
Forward error correction (FEC)/Interleaving to improve UNI-UNI
performance�������������
���� VIII.5����
Laboratory assessment of forward error correction (FEC)/Interleaving
effectiveness����
���� VIII.6����
Additional performance parameters���������
���� VIII.7����
Further analysis with advanced FEC schemes��������
���� VIII.8��
��Analysis of retransmission schemes����������
���� VIII.9����
Recovery from errors and losses due to protection switching schemes��������������
Appendix IX � Effects of network QoS on end-to-end data transmission
performance using TCP����
������ IX.1����
Introduction����
������ IX.2����
Model of TCP performance���������
������ IX.3����
TCP hypothetical reference endpoint (HRE)������������
������ IX.4����
Observations���
������ IX.5����
Summary of TCP capacity estimates��������
Appendix X � An example showing how to calculate IPDV across multiple
sections�� ��
������� X.1����
Calculation of delay variation�����
������� X.2����
Mathematical background�����������
������� X.3����
Special cases����
������� X.4����
Estimating skewness from quantiles�����������
Appendix XI � Digital circuit (ISDN) emulation requirements on IP-based
networks ����
������ XI.1����
Introduction����
������ XI.2����
Packetization and transport assumptions�
������ XI.3����
Range of packet loss requirements�������������
������ XI.4����
Effect of forward error correction���������������
Bibliography����