Digital Data Communications Message Protocol (DDCMP) Specification Version 4.0

Company:	Digital Equipment Corporation
Part:	AA-D599A-TC
Date:	1978-03-01
Keywords:

1.0 Introduction
2.0 Functional Description
- 2.1 Relationship to DECnet
- 2.2 Features
- 2.3 Operating Requirements
- 2.4 Data Link Functions
- 2.5 Functional Organization
3.0 Interfaces
- 3.1 User Interfaces
- 3.2 Device Drive Interface
4.0 Message Formats
- 4.1 Notation
- 4.2 Data Messages
- 4.3 Control Messages
- 4.4 Maintenance Messages
5.0 Operation
- 5.1 Framing
- 5.2 Link Management
- 5.3 Message Exchange
- 5.4 Maintenance Mode
6.0 Error Recording
- 6.1 Threshold Counters
- 6.2 Cumulative Counters
- 6.3 Background Counters
Appendix A Glossary
Appendix B Formal Syntax Definition
Appendix C DDCMP Block Check Computation
Appendix D Format Summary
Appendix E Examples
Appendix F Revision History

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