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by amatecki
How to use the SmsToolset library to send SMS over GSM network by using PDU format
by ToughDev
Interesting findings about GSM SIEMENS TC35
by Grasshopper.iics
This tutorial present a step by step guide for building the ultimate robotic control and information sinking for Arduino Controlled Robots over Internet of Things
by Ranjan.D
Let us see how to send, receive and delete SMS using Arduino and GSM Sheild

Latest Articles

by ToughDev
Interesting findings about GSM SIEMENS TC35
by amatecki
How to use the SmsToolset library to send SMS over GSM network by using PDU format
by Ranjan.D
Let us see how to send, receive and delete SMS using Arduino and GSM Sheild
by Grasshopper.iics
This tutorial present a step by step guide for building the ultimate robotic control and information sinking for Arduino Controlled Robots over Internet of Things

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GSM 

2 May 2016 by amatecki
How to use the SmsToolset library to send SMS over GSM network by using PDU format
22 Dec 2012 by OriginalGriff
Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...A very quick search using your subject as the search term gave over 300,000 hits: Google[^]The top hit is an article from this very site: Send and Read SMS through a...
27 Feb 2013 by bbirajdar
Quote:If I can write a mobile application that give me information about the people whose I have their mobiles numbers stored in my mobile, the application should give exactly where and how far they are from my position or the distance between me and them and the direction.This application...
13 Jan 2014 by Alexander D. Alexeev
I think message is in hex representation of unicode charactersYour message isAcc Bal 0.0000 USD Exp:06/03/14.0TXTs Exp:-.0Bonus SMS Exp:-.0Free SMSs Exp:-.0.00USD Bonus airtime exp:-.New SIM 0.00USD,0SMS, 0.00MB, 0MMS Exp:-. 0TM SMSs Simply conver string from hex into bytes and...
2 Jun 2014 by BobJanova
I'm not aware of a library that does this, although it's definitely worth a search if you haven't already. It's simple enough to write, all you need is to call string.Replace repeatedly with the character you don't like and the one you want to replace it with (e.g. text = text.Replace('–',...
28 Oct 2015 by Jochen Arndt
SMS use specific character sets where the basic 7-bit set which must be always supported is not identical to ASCII. See the Wikipedia[^].So you must encode your message string according to the used GSM encoding scheme.[EDIT]You might have a look at the CP article Library for...
21 Jan 2016 by Richard MacCutchan
See Serial Port I/O[^], for communicating with a modem from a C program.
16 Jan 2017 by Jochen Arndt
This can't be answered with the provided information.Split it into different tasks and try to implememt one after another:From where do you get the position data? If it is some kind of GPS device, check the documentation. Most GPS devices have a RS-232 serial or USB port. Which...
7 Aug 2017 by Jochen Arndt
Search the net for "AT+CMGL". You will find descriptions for the list SMS messages command. Those should also mention that there are two modes for the message output format: Text mode and PDU mode which can be selected with AT+CMGF. So you might switch to text mode to get readable output. ...
16 Feb 2020 by Stefan_Lang
If I understand you correctly, you want to reproduce a string (the remote number) within a new string, and enclose it in double quotes (what you called inverted double comma). You can do it like this: #include #include int...
1 Jul 2022 by OriginalGriff
When you write this in Form2: public static MainMenu MM = new MainMenu(); it does what it says: creates a new instance of the form which - like all other class instances - has nothing to do with any existing instances. In addition, doing it...
7 Nov 2012 by noorAhmad22
hi all how i can make connect Stepper Motor and GSM with RC CAR (Parallel port interfacing)? In this link project details about RC CAR (Parallel port interfacing ) only without Stepper Motor and GSMhttp://www.instructables.com/id/RC-CAR-Parallel-port-interfacing/[^]help me plz...
7 Nov 2012 by enhzflep
No need for an apology - though I do appreciate the effort to make it. :)Grins - yes, written communication is certainly a task we all get better with over time. Practise makes perfect (or better, or something like that..)Okay, fantastic! - now your intentions are crystal-clear. I...
29 Nov 2012 by Ngaradji
is it possible to send and receive sms by public ip adress using gsmcomm? please any orientation can help
6 Jan 2013 by fahimeh.zarei
i download send and receive sms using AT command in C# winform from [] http://www.codeproject.com/Articles/38705/Send-and-Read-SMS-through-a-GSM-Modem-using-AT-Com but in receive tab , didn't display sms in page!!please help me. why didn't display sms in page?
12 Feb 2013 by p.ostovari
I'm writing some SMS sending and receiving codes in monoDroid.Is there any way to debug codes on emulator and send or receive SMS using a real phone or GSM modem which is connected to the computer with USB cable?
19 Mar 2013 by nikitharavinder
I am new to java programming. I have used smsj api to send messages from pc to mobile through a gsm modem. I have succesfully been able to send plain text messages using SmsSender.sendTextSms(msg, reciever, sender) as well as unicode messages using SmsSender.sendUnicodeTextSms("smsj हिन्दी...
17 Jun 2013 by benhadi
Hi everyone,please can you help me with my issue, I want to make and develop a C# source code that allows me to retrieve the Cell ID of my Wireless with C# language, I have make a lot of search and job but no result ?!Best regardsYassine
8 Aug 2013 by GokulKalal
Hello guys,I Am using Telit GL-865 GSM/GPRS. How do I upload continuous data that is coming from serial port onto database using HTTP POST request. I am successful in uploading data, But I am successful in uploading data but only for 14 times. if I press A and send it from hyperterminal 30...
15 Oct 2013 by OriginalGriff
Just because you can create a SerialPort object and set the port to the appropriate value does not mean that the port is available: physical ports cannot be shared by applications since that would bean the received data being "shared" by two applications. This would beam that either all the data...
28 May 2022 by Member 10364520
HelloI have written a C# application which is supposed to interact with a gsm modem using AT commands.All other commands are working well for me except for USSD commands which are appearing to be returning a hexadecimal or encrypted string in the response. The USSD command which i am...
11 Nov 2013 by benhadi
Hi ,I have a Dongle (USB Modem) that contains a SIM card, that I want to get out some information from it, such as the IMSI number or MSISDN, so how can I do it with the WMI ??I did this requirement with the AT+Command but this need to disconnect the Dongle From the internet to liberate...
11 Nov 2013 by Dave Kreskowiak
Not supported.You can get a lot of information on the modem from the Win32_POTSModem class, but the information you want is not exposed by any WMI class. You can't get it using WMI.
23 Nov 2013 by softw
hello, you can try to use .BaudRate = 115200 for fastrack wavecom modem
26 Nov 2013 by murkalkiran
Submit Button CodeString test = cboPorts.Items[2].ToString();string ComName = test;this.s = new SerialPort();this.s.PortName = test;this.s.Open();this.s.BaudRate = 9600;this.s.Parity = Parity.None;this.s.DataBits = 8;this.s.StopBits = StopBits.One;//this.s.Handshake =...
30 Nov 2013 by Mr.VJ
Hello ,firstly register on smslane.com and and take user id and password and this user id,password use as a parameter in c# code source code-------
1 Dec 2013 by Member 9245259
Hi,Can you send sample code of read sms from GSM Modem with AT command under click event using asp.net c#Thanks
1 Dec 2013 by OriginalGriff
Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...A very quick search gave over 200,000 hits: Google[^]In future, please try to do at least basic research yourself, and not waste your time or ours.
1 Dec 2013 by Aydin Homay
HiYou need to socket programming with serial port so please follow of these links and review samples about it just pay attention to for do this purpose you need have familiarity with Telnet, Hyper Terminal and serial socket programming ;-) Simple...
2 Dec 2013 by Member 9245259
I huge gooogling But I can not solved this problem.protected void ReadSMS_Click(object sender, EventArgs e){openport();//Port Related function// Select SIM storageserialport.WriteLine("AT+CPMS=" + Environment.NewLine);System.Threading.Thread.Sleep(200);// Read the...
17 Jan 2014 by Member 10518525
este es mi codigo alguien me puede decir en donde estoy mal que no envia sms, uso un modem WAVECOM fASTRACK M1306B:[Translation]this is my code can someone tell me where I am wrong not send sms, use a modem WAVECOM FASTRACK M1306B function...
6 Apr 2014 by entiresol
I have to develop an auto dialer software using GSM modem in c# for checking is dialed number is working or not.? Which is best way to do this task? Thanks
8 Apr 2014 by imranw
Basics of automating outgoing phone calls using a GSM modem and a computerDialingAutomating outgoing calls is not a simple matter. Dialing the number itself is very easy, but you probably want to knowif the called party responds. There are 2 ways to do this:Querying the status of the...
8 May 2014 by Koras
Hello i am working in java language, i have one GSM modem (Siemens TC35). which hase 16 port,we can attach sim card in port,first of all i want to check whether sim card is attached in port or not?if sim card is attached in port then i want to check how many sms are there in particular sim...
8 May 2014 by Richard MacCutchan
See https://www.google.com/search?q=java+gsm+modem[^].
2 Jul 2014 by Member 10320922
i am trying to send a sms from a modem to a phone but a get always the same error.the error is "No data received from phone afer waiting 30000ms"can anyone help me.the code i used was this 'Verificaçã se o modem está conectado e se as configurações estão correctas Dim...
22 Nov 2014 by Member 10348616
I have a USB GSM Modem (Husawai 610u) attached to my server.The modem is sending SMS perfectly using .NET (VB) source.Can anybody help me to read incoming messages also through ASP.NET (VB) received on the same modem so that I can generate some query on my database and send the reply to...
3 Dec 2014 by Member 8334721
Hi everyone. has anyone tried to send MMS to android phone using a GSM Module? I tried many sample codes from NowSms, ActiveExperts and MCore but it gives me error on sending or its not working. can anyone help me please.? by the way i am using SIM900 module. Thanks in Advance...
28 Feb 2015 by Member 11431150
Before you send USSD with AT Command please set modem or Handphone to Text mode, with AT+CMGF=1 this set the modem to (text mode)AT+CMGF=0 this set the modem to (PDU mode) I hope you understand
28 Apr 2015 by Antondj
I also found that problem. Changing BaudRate to 115200 solved the problem. Thanks.
8 Jun 2015 by aminvincent
i build a simple application for sending message using gsmcomm library and C#. when i sent message through a modem i store it to oracle database SENTMESSAGE table. I provide a table when sending message failed namely FAILEDMESSAGE table (ID, DATE, TIME, PHONENUMBER, MESSAGE), but i still didn't...
2 Aug 2015 by aminvincent
I used gsmcomm library to develop little sms program, but when i click in btnCheckSMS i got the string error like this "Could not find any recognizable digits " . this button used for reading incoming sms in the gsm sim card. This is my code :private void btnCheckSMS_Click(object sender,...
4 Aug 2015 by aminvincent
Just upgrade the gsmcomm library from version 1.15 to 1.21 and it will solve,...in this case gsmcomm library 1.15 didn't support for the shortnumber income message and string number like operator celluler number
28 Oct 2015 by Mshadow17
Hi,I have a project where I need to send an Text Message (SMS) to any mobile number using itegno 3800 GSM modem attached to a USB cable.I can send SMS for only ordinary message like alphabet and numbers.my problem is when i used to send a message containing (~) character it doesn't...
16 Dec 2017 by CloudFS
Hi, so what i am trying to do is to use a gsm modem or a phone connected to a computer to send ussd code for example : *150# and receive an answerafter that if the answer is a menu for example : 1 for balance and 2 for offers i would like to respond by 1 or 2 and get an answer again .....
13 May 2017 by Member 13197399
you are going right bro just do one thing edit this one tx4 ='AT+CMGS="=+9197244*****"'; -> x tx4 ='AT+CMGS="97244*****"';
7 Aug 2017 by Member 12050240
+CMGL: 0,"REC READ","+84963225103",,"16/01/25,15:05:19+28"...
27 Jan 2018 by Member 13646916
my project is automatic room light controller with visitor counter using arduino. my project was running correct upto this but the problem when we connected gsm module to our project because we have given a limit to thye room so when after limit exceeded using gsm a msg must be sent to the...
27 Jan 2018 by CPallini
I looks you have two issues: the IR sensor (or the code handling it) not working and the missing notification. You could first mock the IR sensor (a simple way would be changing from if (digitalRead(in)) to if (1) in order to test the notification part of the code. Then you could face the people...
16 Feb 2020 by Mike Hankey
Is this what you need? Arduino - GSMExamplesSendSMS[^]
13 Oct 2022 by Robert S4r
THIS QUESTION MAY SEAM A DUPLICATE, BUT NOT. after a long period of search on internet and no, result, then had to seek for assistance. All solutions apply to loading available ports in a combo box and the user checks one at a go. But the...
20 Apr 2021 by Unique Stories
Hi i'm a biggner in AT command and i want to know my balance using hyperterminal note that Send:AT+CSCS=? Recieve: +CSCS: ("UCS2","GSM","PCCP437","PCDN","IRA","8859-1","HEX","UTF-8") even on changing CSCS to other result will be same as it...
21 Apr 2021 by Richard MacCutchan
Why have you reposted this question? I have already decoded the text for you.
28 May 2022 by Văn Thông Huỳnh
I'm wondering the same error! it only returns the first time AT + CUSD = 1, \ "* 101 # \", 15 OK, the remaining CUSD balance cannot be taken. please, show me the method!
1 Jul 2022 by 0071974
Hello guys, I'm a newbie to C# OOP. I have an application that connects to a GsmModem. The app has two forms i.e: Main-form(Main-Menu) and Form2(Messages). I'm able to open the port in Main-Menu and connect to it. I want to be able to access it...
7 May 2023 by ToughDev
Interesting findings about GSM SIEMENS TC35
22 Dec 2014 by Grasshopper.iics
This tutorial present a step by step guide for building the ultimate robotic control and information sinking for Arduino Controlled Robots over Internet of Things
2 Mar 2016 by Ranjan.D
Let us see how to send, receive and delete SMS using Arduino and GSM Sheild
27 Aug 2018 by Nelek
Sorry for being that direct, but this question could only be answered with a couple of links from google. And that is something, you can do on your own. Some thoughts: - What you are asking is content enough to write a manual, and to keep a professional developer busy for a while. If you want...
27 Feb 2013 by Sakura IK
Hi I would like to know about the possibility to implement the idea which is :If I can write a mobile application that give me information about the people whose I have their mobiles numbers stored in my mobile, the application should give exactly where and how far they are from my...
2 Jun 2014 by Carl Mailey
Hi,I am sending automated sms messages to customers and as we would like to keep the amount of sms sent to a minimum and avoid sending them with UCS-2 encoding i was looking for a way to replace the characters that arnt in GSM with similar characters.For instance elongated hyphens — , i...
27 Feb 2013 by Jegan Thiyagesan
Hi,Yes you can develop this application, and these type of apps are already exists but mainly used by Authorities such as CIA, FBI, equivalent of foreign Intelligent agencies. However, it has big grey area, regarding privacy of those people you are tracking. Because of the privacy issues...
15 Nov 2020 by Dave Kreskowiak
You would have to open each port, one at a time, and send a command to it to get an expected response. If you don't get that response, close the port and move on to the next one.
16 Apr 2013 by Pranit Kothari
Hi,I am new to telecom domain, and wonder which are the good forums for Telecom and GSM. Can you please suggest good telecom domain sites (like CodeProject.com).Please do not suggest Google search, I have done it, most of the sites do not send registration confirmation message. (And...
24 Nov 2015 by Member 12164493
Hello.I have not used any sms api or sms gateway till now. I am working on my final year project where i need to send sms from my java application. I have downloaded smslib api and have also bought a D-Link DWM-156 HSUPA USB adapter. But i am completely clueless about using that api and...
22 Dec 2012 by fahimeh.zarei
i want to Send and Read SMS through a GSM Modem using AT Commands in C#. please help me.
12 Feb 2013 by Jainam Ranka
Hello..I have developed a bulk sms system and created a setup with .net framework 4 client profile.It works on all windows platform except windows 8.Error log shows : incompatible with windows 8i searched everything in google but could not find solution.Can anybody help me?
22 Dec 2017 by romi_4rd1
Try switch your chips to another provider, I have same problem before.
27 Aug 2018 by Member 13963664
i have arduino uno and gsm sim900a . i want to my system onnly to receive text messages to my computer/laptop and directly notify me and same time save to database directly. i need help please in arduino and receiving process. thanks. What I have tried: i tried researching everywhere but...
16 Feb 2020 by kick_start
i am currently doing project in which i want to reply to sender without coding any phone number into code and i cant understand how to use emmiting no. while holding number in remoteNumber do work but while sending sms back requires number as...
6 Jan 2013 by OriginalGriff
Don't post this under Quick Answers - if you got the code from an article, then there is a "new message" button at the bottom of that article, which causes an email to be sent to the author. They are then alerted that you wish to speak to them.Posting this here relies on them "dropping by" and...
10 Apr 2013 by Member 9977781
Dear! I want to Send the MMS using C# Application. But I have no idea to send this so please tell is it a way to do this
15 Jun 2013 by JMAM
Hi Guys,I have done so many research the whole week and tried all different codes from google, yahoo. code projects. etc.So far i have tried major links...
10 Sep 2013 by Green Mile
I am getting following exception when reading sms through GSMCommunication.dll in c#GsmComm.GsmCommunication.CommException: No phone connected. at GsmComm.GsmCommunication.GsmPhone.VerifyValidConnection()at GsmComm.GsmCommunication.GsmPhone.SelectReadStorage(String storage)at...
15 Oct 2013 by Member 10314517
public void Opens(){ if (this.serialPort.IsOpen == false) { this.serialPort.Open(); }}Showing Exception on this.serialPort.Open();AccessDenied and IOException occured
13 Jan 2014 by Member 10364520
I managed to solve it last year, anyway, thanks for the response.
3 Jun 2014 by Carl Mailey
I've gone down the route of putting it all in myself, that seems to be the only solution with no library available to do it for me.It's hardly any code but it took a couple of tedious hours finding which characters arnt in GSM and swapping them out where appropiate.Thanks for the...
29 Mar 2015 by Badour alsamaraie
hi everybody,i want to ask if any one knows communication wiki!!! and it's prefers to be like codeproject.com . so i can more benefits.
5 Apr 2016 by emmanuel koech
i have downloaded the source code "Send and Read SMS through a GSM Modem using AT Commands" but after running it and getting connected successfully the application seems to freeze with no error meseage or success message. what could be the problem please helpWhat I have tried:i have...
16 Jan 2017 by Member 12953928
I need to get latitude and longitude of a location when asked by a micro controller and has to store the same in SD card and cloud with date and Time stamp. I'm using Raspberry pi 3 and GSM sim 900AWhat I have tried:please help me with this. I'm not able to find exact code as I'm a...
13 May 2017 by Member 13197399
i want to send sms usig gsm with matlab i have written following code but not getting any result except shown below What I have tried: ss=serial('COM4'); ss.baudrate=9600; fopen(ss); ss.Terminator = 'CR' %char(34 ") 13 enter. 26 for ctrl z tx ='AT'; tx1=char(13); tx2 ='AT+CMGF=1'; tx3...