CONTENTS

�1���� Scope�
�2���� References�
�3���� Abbreviations and terminology�����
������� 3.1���� Abbreviations��������
������� 3.2���� Terminology����������
������� 3.3���� External terminology����������
�4���� Introduction������
������� 4.1���� General��
������� 4.2���� General objectives�
������� 4.3���� Generic functions���
������� 4.4���� A reference configuration for traffic control and congestion control��
������� 4.5���� Events, actions, time-scales and response times������
������� 4.6���� Quality of service and network performance�����������
�5���� Traffic parameters and descriptors�����������
������� 5.1���� Definitions�
������� 5.2���� Requirements���������
������� 5.3���� Traffic contract������
������� 5.4���� Traffic parameter specifications������
�6���� ATM transfer capabilities�
������� 6.1���� General��
������� 6.2� ���High level description of ATM transfer capabilities��
������� 6.3���� Applicability of ATM transfer capabilities to applications����
������� 6.4���� Deterministic bit rate transfer capability (DBR)�������
������� 6.5���� Statistical bit rate transfer capability (SBR)�
������� 6.6���� ATM block transfer capabilities (ABT)������
������� 6.7���� Available bit rate transfer capability (ABR)�
������� 6.8���� Guaranteed frame rate transfer capability (GFR)�����
�7���� Functions for traffic control and congestion control�����������
������ �7.1���� Introduction�����������
������� 7.2���� Traffic control functions������
������� 7.3���� Congestion control functions����������
������� 7.4���� Traffic control interworking functions����������
�8���� Procedures for traffic control and congestion control���������
������� 8.1���� Resource management cell format��
������� 8.2���� RM cell error conditions����
Annex A � Generic Cell Rate Algorithm GCRA(T,t)����
������� A.1���� Virtual Scheduling Algorithm (VSA)����������
������� A.2���� Continuous-state leaky bucket algorithm����
Annex B � Application of the GCRA to SBR conformance definition����
Annex C � ABT/DT control messages across a standardized interface����
Annex D � ABT/IT control messages across a standardized interface����
Annex E � Avoidance of multiple outstanding BCR negotiations��� �
Annex F � ABR control messages across a standardized interface����
Appendix I � Examples of application of the equivalent terminal for the peak cell rate definition����
������� I.1���� �� Configuration 1����
������� I.2���� �� Configuration 2����
Appendix II � Transcoding rules from signalling information onto OAM traffic parameters at the ATM layer����
Appendix III � Throughput behaviour of the Generic Cell Rate Algorithm (GCRA)����
Appendix IV � UPC/NPC accuracy requirements����
Appendix V � Examples of methods ensuring unicity of RM cell numbering in ABT����
������� V.1���� Segmentation of the SN field between different networks���
������� V.2���� Proprietary handling of SN field�����
������� V.3���� Segmentation of the SN field for indicating relative location of RM cell�������
Appendix VI � Derivation of conformance definition parameters for ABT����
Appendix VII � Source, destination, and network element reference behaviours for ABR����
����� VII.1���� Source reference behaviour����������
����� VII.2���� Destination reference behaviour����
����� VII.3���� Network element reference behaviour�������
����� VII.4���� Impact of source reference behaviour on traffic characteristics�������
Appendix VIII � 2‑store algorithm for determination of T(k) in ABR explicit mode����
���� VIII.1���� 2‑store algorithm for determination of T(k) in ABR explicit mode��
���� VIII.2���� Adjustment of ACR(t) based on the ECR field in backward RM cells��������
Appendix IX � Applicability of ATM transfer capabilities to applications����
Appendix X � Additional material related to the F-GCRA����
������� X.1���� The support of QoS commitments through F‑GCRA���������
������� X.2���� Example implementation illustrating how F‑GCRA may be used to support QoS commitments����
������� X.3���� Implementation limits for the case of many non-conforming frames��
������� X.4���� Proof of a result related to F-GCRA���������
Appendix XI � Providing GFR QoS with the CF‑GCRA����
Appendix XII � Expectations of a GFR network element behaviour����
Appendix XIII � Applicability of GFR ATM Transfer Capability to applications����
Appendix XIV � OAM support for GFR connections����