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  | Digi m10 Technical Overview  | |
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  | Table of Contents | 
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About This Manual  | 6  | ||
  | Target Audience  | 6  | |
  | Symbols Used in This Manual  | 6  | |
  | Reference Documents  | 7  | |
  | Where to Get Help  | 7  | |
1.  | General Description  | 8  | |
  | 1.1  | Background  | 8  | 
  | 1.2  | Communication using a Digi m10 Satellite Modem  | 9  | 
2. Types of Communication Methods  | 11  | ||
  | 2.1  | Data Reports  | 11  | 
  | 2.2  | Messages  | 11  | 
  | 2.3  | Global Grams  | 11  | 
3.  | Terms and definitions:  | 12  | |
  | 3.1  | Gateway  | 12  | 
  | 3.2  | Gateway Earth Station (GES)  | 13  | 
  | 3.3  | Subscriber Communicator (SC)  | 13  | 
  | 3.4  | SC Terminated  | 13  | 
  | 3.5  | SC Originated  | 13  | 
  | 3.6  | Global Gram  | 13  | 
  | 3.7  | Message Blocking  | 14  | 
  | 3.8  | Message Priority  | 14  | 
  | 3.9  | Speed Dial  | 15  | 
  | 3.10  | Message Acknowledgments  | 15  | 
  | 3.11  | Alternate Terminating Address (ATA) / Message Forwarding  | 16  | 
  | 3.12  | Delivery Plan  | 16  | 
  | 3.13  | 17  | |
  | 3.14  | 17  | |
4.  | Digi Extended Packets  | 18  | |
  | 4.1  | Temperature Out of Bounds Packet  | 18  | 
  | 4.2  | Temperature Query  | 19  | 
  | 4.3  | Temperature Query Response  | 20  | 
  | 4.4  | NVM Data Corruption Alert Packet  | 21  | 
  | 4.5  | Code Upgrade Packet  | 21  | 
  | 4.6  | RTS/CTS Control Packet  | 23  | 
Appendix A: Upgrade Firmware  | 25  | ||
Digi International, Inc. © 2009  | iv  |