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Questions tagged [gsm]

GSM is an abbreviation for "Global System for Mobile Communication"

GSM is a second Generation Cellular Standard popularly known as 2G Standard. It is standardized by ETSI(European Telecommunications Standardization Institute).

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AT+CIPSTART only accepts IP or domain name

I am trying to connect GPRS GSM A6 to arduino. Everything works fine, but there is a slight problem. And its that AT+CIPSTART only accepts IP or domain name. For example this, AT+CIPSTART="TCP", "xxx.xx.x.xxx", 80 works fine, Or…
Muzahir Hussain
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SMS encryption and decryption by SIM-Card (USIM)

I Want to write a javacard applet for SIM-Card (USIM) to encrypt and decrypt SMS for specific number. i don't want to install any application on mobile phone and SIM-card applet has to detect the message is belong to specific number and encrypt or…
Mohsen Gorgani
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Arduino + GSM shield V2 // How to use buzzer signal

I have a GSM shield V2 for Arduino, and I want some buzzer to make some noise when there is an incoming call. At this link http://www.thaieasyelec.net/archives/Manual/M10_HD_V1.00.pdf page 44 I found that by connecting a simple transistor and a…
Thomas Pujolle
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error: port is not open in raspberry pi

I have connected gsm sim900 to raspberry pi and enabled uart serial port as: in terminal : $ sudo nano /boot/config.txt then i added enable_uart=1 to the config text. as the above changes i see this answer : [error] [serial out : sendSMS] ERROR:…
Rezvan
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seial communication between GSM and PIC16F877A

Please help I'm trying to prepare a project that need serial communication between PIC16F877A and a GSM sim900 so that I can send and receive sms from a remoteness here is the peace of code to send sms writen in MPLAB XC8 ` …
kassim
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Broadcasting by GSM Antenna

My question is about sending or receiving data directly on gsm antennas.(P2P) According to its documentation, arduino gsm shield lets me send/receive text message or make call to a specific number. I want to make data broadcasting using gsm…
Ali
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Interfacing GSM module with nodemcu

I wrote this code to interface the gsm module, can anyone check the code and give me some propositions ? hex1= '0x1A'; function delay_s(delay) delay = delay or 1 local time_to = os.time() + delay while os.time() < time_to do…
Sawssen Bejaoui
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Unable to receive call on VoIP number using GoIP 4

I am unable to receive calls from any number to my VoIP number. I am using GoIP 4 (GSM over IP). Device details are following: Firmware Version: GS-4.01-96 Module Version: M35FAR02A01_RSIM Software Name: EasyPhone Call In settings: User No Input…
ahmad mirza
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How to manage the received SMS's in a gsm modem connected to a pc?

i am working on a project that a computer should manage the data receiving as sms text in standard predefined coding from multiple senders. the senders are some embedded sytems that send error situations of a machine via sms messages. i am an…
A. Mortazavi
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How to send application via SMS packets

Is this possible to send an application using SMS packets? Anyway, is it possible send an application on GSM? Thanks.
alireza
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How to send ctrl+z to serial port using c#

I have tried the following: (This "whatever" is a 4 digit pin asked to enter after sending a AT+STGR=3,1 to the port) 1. this.port.WriteLine("whatever\0x1A"); 2. this.port.WriteLine("whatever"+ char.ConvertFromUtf32(26)); 3.…
Adib
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Arduino gsm receive SMS

I need to program arduino with GSM sim 900 to receive SMS and compare the received msg and phone number. Basically I want to read the message and phone number and store it in arduino uno.
user6487743
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Voice call with gsm-modem by C#

im new in c# and i wanna right a code for have a voice call through the GSM modem , actually don't know about how to receive and send voice or stream that ,if any one knows about how to do it please help me with this problem. i just found this but…
Kavir Developers
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Universal solution to find CID and LAC

I'm looking for any universal cross-platform (Android/iOS/WinPhone) solution to find CID (Cell Identifier) and LAC (Location area code). Appreciate any help.
Mia
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arduino + gprs/gsm shield

I am currently working on an arduino project as well as an asp.net web application. my arduino project is using several sensors whose values/readings I need to display on my web application. I also have a gsm/gprs shield which I am hoping will…
vickiesiggie
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