CONTENTS

�1���� Scope
�2���� References
������� 2.1���� Normative references
������� 2.2���� Informative references
�3���� Terms, definitions and abbreviations
������� 3.1���� Terms and definitions
������� 3.2���� Abbreviations
�4���� Conventions
�5�� ��Introduction
������� 5.1���� Relation with H.323 standards
������� 5.2���� Relation with IETF standards
������� 5.3���� Relation to RFC 3435 and ABNF Grammar
�6���� Media Gateway Controller Interface (MGCI)
������� 6.1���� Model and naming conventions
� ������6.2���� SDP use
������� 6.3���� Gateway control functions
������� 6.4���� States, failover and race conditions
������� 6.5���� Return codes and error codes
������� 6.6���� Reason codes
������� 6.7���� Use of local connection options and connection descriptors
�7���� Media gateway control protocol
������� 7.1���� General description
������� 7.2���� Command header
������� 7.3���� Response header formats
������� 7.4���� Session description encoding
������� 7.5���� Transmission over UDP
������� 7.6���� Piggybacking
������� 7.7���� Transaction identifiers and three-way handshake
������� 7.8���� Provisional responses
�8���� Security
Annex A � Event packages
������� A.1���� Line package
������� A.2���� FAX Package
Annex B � Dynamic Quality of Service
Appendix I � Example event package

Appendix II � Example command encodings
������ II.1���� NotificationRequest
������ II.2���� Notify
������ II.3���� CreateConnection
������ II.4���� ModifyConnection
������ II.5���� DeleteConnection (From the Call Agent)
����� �II.6���� DeleteConnection (From the Embedded Client)
������ II.7���� DeleteConnection (Multiple Connections From the Call Agent)
������ II.8���� AuditEndpoint
������ II.9���� AuditConnection
����� II.10���� RestartInProgress
Appendix III � Example call flow
Appendix IV � Connection mode
Appendix V � Compatibility information
Appendix VI � Additional example event packages
Appendix VII � Event packages
Appendix VIII � Application of the NCS protocol to a SCN IPAT
���� VIII.1���� Overview
���� VIII.2���� IPAT architecture
���� VIII.3���� Electrical and physical interface requirements
���� VIII.4���� NCS package for V5 SCN protocol messages
���� VIII.5���� Provisioning configurations
���� VIII.6���� European Line Package support
���� VIII.7���� Call flow examples
Appendix IX � Metering support for IPCablecom NCS
������ IX.1���� Objectives
������ IX.2���� Automatic metering package
������ IX.3���� Use cases � Example call flows
������ IX.4���� Terms
Appendix X � ABNF Grammar for NCS
BIBLIOGRAPHY
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