| Overview |
 | What is PresenTense |
| Network Time Synchronization |
| Time Protocols & Accuracy |
 | Which Time Protocol is Right for Me ? |
| GPS Time Synchronization |
| Free Run Support |
| Standard Deviation Statistical Filter |
| System Requirements |
| FAQ |
| Configuration |
| Settings Tab |
| Advanced Settings |
| SNTP Time Source Tab |
| Local GPS Tab |
| NTP Time Source Tab |
| NTP4 Query Command Line Tool |
| Administration Tab |
| Log Tab |
| Local GPS Receivers |
| Configuring via DHCP |
| DHCP Options 1-40 |
| DHCP Options 41-80 |
| Remote Installation |
| Technical |
 | RFC 2030 |
| RFC 868 |
 | RFC 1305 |
| 1. Introduction |
| 1.1 Related Technology |
| 2. System Architecture |
| 2.1 Implementation Model |
| 2.2 Network Configurations |
| 3. Network Time Protocol |
| 3.1 Data Formats |
| 3.2 State Variables and Parameters |
| 3.2.1 Common Variables |
| 3.2.2 System Variables |
| 3.2.3 Peer Variables |
| 3.2.4 Packet Variables |
| 3.2.5 Clock-Filter Variables |
| 3.2.6 Authentication Variables |
| 3.2.7 Parameters |
| 3.3 Modes of Operation |
| 3.4 Event Processing |
| 3.4.1 Notation Conventions |
| 3.4.2 Transmit Procedure |
| 3.4.3 Receive Procedure |
| 3.4.4 Packet Procedure |
| 3.4.5 Clock-Update Procedure |
| 3.4.6 Primary-Clock Procedure |
| 3.4.7 Initialization Procedures |
| 3.4.7.1 Initialization Procedure |
| 3.4.7.2 Initialization-Instantiation Procedure |
| 3.4.7.3 Receive-Instantiation Procedure |
| 3.4.7.4 Primary Clock-Instantiation Procedure |
| 3.4.8 Clear Procedure |
| 3.4.9 Poll-Update Procedure |
| 3.5 Synchronization Distance Procedure |
| 3.6 Access Control Issues |
| 4. Filtering and Selection Algorithms |
| 4.1 Clock-Filter Procedure |
| 4.2 Clock-Selection Procedure |
| 4.2.1 Intersection Algorithm |
| 4.2.2. Clustering Algorithm |
| 5. Local Clocks |
| 5.1 Fuzzball Implementation |
| 5.2 Gradual Phase Adjustments |
| 5.3 Step Phase Adjustments |
| 5.4 Implementation Issues |
| 6. Acknowledgments |
| 7. References |
| Appendix A |
| Appendix B |
| Appendix C |
| Appendix D |
| Appendix E |
| Appendix F |
| Appendix G |
| Appendix H |
| Appendix I |
| About |
| About PresenTense |
| About Bytefusion Ltd. |
| Change Log |
| Time Tools |
 | LanTime Analyzer |
| PresenTense Time Server |
| PresenTense NTP Auditor |
| High Resolution Time |
| NMEA Recorder |
| NTP Server Scanner |
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