User`s manual
Table Of Contents
- 1. Introduction
- 2. Getting Started
- 3. Initial IP Address Configuration
- 4. Introducing Serial Port Operation Modes
- 5. Introducing OnCell Central and Ethernet Operation Modes
- 6. Using the Web Console
- 7. Cellular Network Settings
- 8. Configuring Serial Port Operation Modes
- 9. Configuring the Cellular-Enabling Ethernet Device
- 10. Configuring OnCell Central Management Software
- 11. Additional Serial Port Settings
- 12. System Management Settings
- 13. Software Installation/Configuration
- A. Pinouts and Cable Wiring
- B. RFC2217
- C. Dynamic Domain Name Server
- D. Well Known Port Numbers
- E. Auto IP Report Protocol
- F. GSM Alphabet
- G. Default Settings

OnCell G3111/G3151/G3211/G3251 Series User’s Manual Serial Port Operation Modes
4-7
Types of TCP Server Connection
1. Fixed Public IP for the OnCell.
If your cellular service provider offers a fixed public IP address after you connect to the
cellular network, you can access the OnCell G3111/G3151/G3211/G3251 from a host PC
using either a private IP or public IP.
2. Using Auto IP report.
If your cellular service provider offers a dynamic public IP address after you connect to the
cellular network, you can access the OnCell G3111/G3151/G3211/G3251 from a host PC
using a fixed public IP. Since the IP address of the OnCell G3111/G3151/G3211/G3251 is
changed every time it is connected to the cellular network, the host IP can be aware of the
change by the Auto IP Report message sent from the OnCell G3111/G3151/G3211/G3251.
Please refer to Appendix E for the format of the Auto IP Report Protocol.