Getting started with the 3G cellular API

Question

Hi,

I am trying to become familiar with the 3G cellular modem, and I want to communicate with it using the API frames. I have tried to send the following string to the modem using the Realterm terminal: 0x7E 0x00 0x09 0x88 0x07 0x53 0x48 0x00 0x00 0x7D 0x33 0xA2 0x00 0x20. I have confirmed both the baud rate and com port using XCTU. I have sent the string as Hex, with a character return.

I have yet to receive any kind of response. Does any one know of a command that can be sent to the modem that would generate some kind of standardized response? Or could point me in the correct direction?

Thank you all in advance.

Answer 1

I solved the problem. My terminal input was incorrect. I generated the following API command using XCTU: 7E000C2001342B794D2AF90000010095

Next, I sent it as hex with Realterm and recieived the following string from the modem: 7E 00 03 89 01 00 75.