This module can be used with Indian 4G bands. This means it can be used with Vodafone, Airtel or Jio networks.
This module comes preconfigured with AT commands.
The module offers UART to issue commands.
Since the communication speed is really high so the 3.3V and 5V UART lines can not be used for communication with the board.
The company offers technical documents on hardware design for the UART.
Here is the circuit I am using for converting the 1.8V to 5V using the BC547 NPN BJT transistor.
I connected the UART on the module to a USB-to-Serial convertor.
I can then use AT commands to control the module functions like call, SMS, data etc.
Here is the basic AT commands
- For making calls,SMS or data etc from the module you will need a Registered SIM card
- For making calls from module
ATDxxxxxxxxxx;
x’s are your telephone number
semi colon must be inserted at the end - For issuing DTMF tones
AT+VTS=[number],[duration]
Example: DTMF tone for digit 8
AT+VTS=8,500 - For Receiving Incoming Calls
ATA - For Disconeccting On-going call
AT+CVHU=0
ATH - For Sending SMS
AT+CMGF=1
AT+CMGF=”+[country ISD code][Mobile number]”
after sending the above commands you can send your message.
At the end of your message you need to send number 26 (hex 1A) to mark the end of your message.
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