I have a task at work to investigate if it is possible to send AT commands to an android device via ADB shell. So far,I have tried to echo out the AT commands but it passes them as normal str...

I want to make a call using my GSM modem. So I wrote the below program: import time import serial recipient = "+98xxxxxxxxxx" phone = serial.Serial("COM10", 115200, timeout=5) try: time.sleep(0...

I need to connect in internet with a usb 3g dongle using at commands. My apn provider is: APN = tim.br Username = tim Password = tim How can I connect using only at commands? It's possible? Th...

I am using SIM900 GSM module connect to my AVR Microcontroller. I tested it with FT232 to see transmitting data. First Micro sends AT it will response OK AT OK AT+CMGF=1 OK AT+CMGS="+9893XXXXXX" r...

I'm trying to run ussd code via gsm modem to get sim balance. I'm using GsmComm library, ASP.NET Web Form, C#. Below is my code : public string SendUssdRequest2(string request) { comm = Connec...

I have to control a modem Cinterion ELS61 with a host application. Can anyone tell me in simple words which is the real difference among at+creg?, at+cgreg? and at+cereg? commands? I know that cgre...

In Linux I need to send a sequence of AT commands to a serial port on e.g. /dev/ttyS0, which has to wait for an OK answer before the next command is sent. I could imagine doing something like echo...

I get +CME ERROR: 10 on setting AT+COPS=1 Below is my terminal AT command output: AT OK AT+CSQ +CSQ: 12,0 OK AT+CMEE=1 OK AT+COPS=? +COPS: (2,"405800","405800","405800"),(1,"40505","40505","...

I used to "force network attach" to LTE on my Android device using at+cops=0,,,7 Is there an AT command for 5G NR?

I'm using a SIM868 module and I was using my usual SIM card with no problem, but now I have bought a new SIM card and has no pin. I need to add a PIN code in order to have more security. I have ch...

I created this python script on rpi2, the message goes through, but it is a blank message. Is it a encoding issue? import serial import time from sys import version_info from curses import ascii ...

I have a Raspberry Pi with a SIM900 GSM add-on board connected. I have managed to establish a GPRS connection with pppd by following this guide. (It's for a different GSM module but the steps are t...

I wrote the below Python program to communicate with my D-Link DWM-156 GSM modem. This program wait for incoming calls and as it receive a RING alert, it accepts that call. Fortunately it works fi...

I would like to send AT command to my modem by using shell script and parse the result in order to verify if the OK is returned. at=`echo -ne "AT+CFUN1=1\r\n" > /dev/ttyUSB0 | cat /dev/ttyUSB0`...

I bought an air200 gsm module and this module won't work properly. in one hand i use the standard at command for sending Unicode SMS, but cant sends Unicode. from the other hand when I send text SM...

Manufacturer: huawei Model: E3533 Revision: 22.318.27.00.00 IMEI: 353934033009021 +GCAP: +CGSM,+DS,+ES AT+CMGS command work well. OK AT+CMGS="99667788" > test sms +CMGS: 45 OK AT+CMGL="...

Can anyone help me to send and receive SMS using AT commands in Python? In case it matters, I'm using Fedora 8. Which phone will be better with Linux (Nokia, Sony Ericson, Samsung,.....)? Will al...

I am using a SIM800L module with a Texas Instrument Launchpad, with a MSP430G2553 microcontroller, not using an external library for SIM800L. Problem Statement: A Simple text message (SMS with Tex...

I am trying to find DTCs from various ECUs in a Skoda Rapid 2009 model. I am using OBDLink SX (elm 327 chip) and Putty (similar to HyperTerminal) https://jazdw.net/tp20 This link gives the list of...

I am using an Arduino Uno with a sim900 gps/gprs module and I'm using at commands, how can I get the response of at command (i.e OK, ERROR) so that I can do something if response == "OK" or respons...

I have been working lately on AT commands testing. I had difficulties in finding the own number when the sim is not subscribed for SMS and voice calls(in some special cases where sim is used for la...

I am trying to send AT commands to ESP8266 to get connected with internet with the Wifi. When I am sending AT and AT+RST command on serial monitor then I am getting OK and ready response which see...

What is the AT command sequence used to reset a USB cellular modem? Is there a single AT command that can be used? Or does it require a sequence of several in order to reset a USB cellular modem? ...

I'm developing a piece of embedded software, which also communicates with a modem through the AT protocol. Now I want to read messages, but I have come across a problem with my memory capacity. It ...

I am running the AT command AT+KCELL to get cell information and it returns, amongst other things, a PLMN (Public Land and Mobile Network) - the description of this from the documentation is: PL...