© Microhard Systems Inc. 8
Table of Contents (continued)
4.8.4 IP List .................................................................................................................................... 79
4.8.5 Default ................................................................................................................................... 80
4.9 I/O ..................................................................................................................................................... 81
4.9.1 Status .................................................................................................................................... 81
4.10 Advanced .......................................................................................................................................... 82
4.10.1 VPN / IPsec ........................................................................................................................... 82
4.10.1.1 Gateway to Gateway (Site-to-Site) ........................................................................... 82
4.10.1.2 L2TP Server ........................................................................................................... 88
4.10.1.3 L2TP Client............................................................................................................. 90
4.10.1.4 VPN Client Status ................................................................................................... 92
4.10.2 GRE Tunneling ...................................................................................................................... 93
4.10.3 GPS ...................................................................................................................................... 97
4.10.4 Event Reporting ................................................................................................................... 102
4.10.4.1 Configuration ........................................................................................................ 102
4.10.4.2 Message Structure ................................................................................................ 103
4.10.4.3 Message Payload ................................................................................................. 104
4.10.5 SMS .................................................................................................................................... 105
4.10.6 SMS Alerts........................................................................................................................... 106
4.10.7 Netflow Report ..................................................................................................................... 108
4.10.8 Modbus................................................................................................................................ 109
4.10.8.1 TCP Modbus ........................................................................................................ 109
4.10.8.2 COM (Serial) Mobus ............................................................................................. 111
4.10.9 Power Saving ....................................................................................................................... 113
4.10.10 Data Usage .......................................................................................................................... 114
4.11 Tools ............................................................................................................................................... 117
4.11.1 Maintenance ........................................................................................................................ 117
4.11.1.1 Configuration Backup (WebUI/FTP) ....................................................................... 117
4.11.1.3 Configuration Restore (WebUI/FTP) ...................................................................... 119
4.11.1.5 Firmware Upgrade (WebUI/FTP) ........................................................................... 121
4.11.2 NMS Settings ....................................................................................................................... 123
4.11.3 Diagnostic Utilities (Ping/Trace Route) .................................................................................. 127
4.11.4 Reset to Default ................................................................................................................... 128
4.11.5 Reboot System .................................................................................................................... 128
4.12 Logout ............................................................................................................................................. 129
5.0 AT Commands ....................................................................................................130
5.1 AT Command Overview .................................................................................................................... 130
5.1.1 Serial Port Configuration....................................................................................................... 130
5.1.2 Telnet TCP/IP Configuration ................................................................................................. 131
5.2 AT Command Syntax ....................................................................................................................... 132
5.3 Supported AT Commands ................................................................................................................ 133
Appendices
Appendix A: RS485 Wiring .................................................................................................................. 178
Appendix B: Serial Interface ................................................................................................................ 179
Appendix C: IP-Passthrough ............................................................................................................... 180
Appendix D: Port Forwarding .............................................................................................................. 182
Appendix E: VPN Example .................................................................................................................. 184
Appendix F: Firewall Example ............................................................................................................. 192
Appendix G: Troubleshooting ............................................................................................................. 194
Appendix H: “system.conf” File Structure .......................................................................................... 197
Appendix I: SNMP MIB File Sample ................................................................................................... 222
Appendix J: Digital I/O: Driving an External Relay ............................................................................. 237