VoIP Gateway: how to use AT command?
Module Operations
You can select different module and do the operations of restart, stop and start.
Figure 3.4.8-1 Module Operations
Command Operation
Figure 3.4.8-2 Command Operations
| Items | Description |
| Select port | Select port to do command operations. |
| Manually call | Check the SIM can send a call or not. |
| AT Command | AT command to check SIM status. |
| USSD command | It’s for querying balance, number and recharge etc. |
| SIM status | Display the SIM status. |
| Content | The response after sending USSD/AT command. |