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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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Not getting response from GSM Modem using AT command

I am learning AT Command in c#. public static void Main(string[] args) { String command = "AT"; SerialPort serialPort = new SerialPort { PortName =…
SM Farhad Ali
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GSM cell (longitude, latitude), it's sector and some object (with longitude, latitude)

I have rather simple task and I would like to ask you for recommendation. I hope there is a Java library which can help me. Description Given GSM cell with longitude, latitude, azimuth, max and min distance. With the help of these parameters I can…
Capacytron
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Programming GSM Module to send SMS

I would like to use a standalone GSM Module that can interface with other systems like TV, AC, Fridge, etc.. via an SMS or a Call For example: 1. If the GSM Module is hooked up to a Smoke Sensor, when there is an alert the GSM Module should be able…
vinoths
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How to convert the incoming characters coming from gsm module into a string?

Its my first time to use gsm shield to my arduino so I'm kinda confused so i need directions. My aim is to read the message sent to my gsm shield then compare that message into a specific string. if they are the same, arduino will do something.…
jpvisto
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Java Serial Communication PortInUseException

I have an SMS-based Java application using CommV3 drivers for Serial communication to a GSM Modem. I have two separate codes, one for sending messages and one for receiving messages. Each code works perfectly when executed individually. Now, when I…
GreenDroid
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How do I program a mobile app to send SMS?

I want a mobile app to send automated SMS. This will be in VB.Net. I've searched for articles on these but they are all about PC apps accessing a GSM modem or a mobile through a COM port. Is it the same process with mobile apps on the phone (not…
Yves
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Calling short code number (support services) with Asterisk GSM Gateway

In our company we have configured VOIP GSM gateway with Astersik. We can call any number with this gateway but the only problem we face is when we call some support service. When a support service says please pres 1 for this service, pres 2 for this…
AXheladini
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Send SMS using phone from computer

I need my computer program to be able to send and receive SMS messages. The software has to run independent of the Internet so using a web based SMS gateway is not the solution. The software should be running from a linux or a Windows machine.…
Rohit Banga
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Incoming GSM Call Receive in Android and Make confererence to a SIP Number

I am new in Android Development. Can you show me some way How to at Android: 1) Receive Incoming GSM Call and Auto answer 2) Connect/make call to my Sip Account (Asterisk Server Installed my home) 3) Make the Conference. That mean Any Incoming GSM…
user1437019
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GPS Tracker and GPRS connection over changing GSM (BTS) envioment

I have question what is the best way to implement in GPS Tracker software communication with server. The connection is established with GPRS but I have some question to it. GPS Tracker has a tendency to switch between Network BTS'es during vehicle…
Marcin Kapusta
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what happens in GSM receiver if more sms is received

hi i want to know what happens in a gsm modem if it receives many no of sms at a time. say some 1000 sms at a time and it will again receive 1000 sms after every 2 minutes.
user1967180
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Measuring distance using GSM antennas

Scenario: Just imagine a big hall, let's say 20 meters x 30 meters. In this hall there are people walking. Imagine that each person has a mobile phone. We would like to determine the position of each mobile with an accuracy of 1 meter. Question: The…
Luixv
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Read all sms exist in GSM Modem in c# app

I wrote this code to receive sms.but if some sms receive with together,it can not show all of them. How can i read all of sms? private GSMModem oGsmModem { get { return withEventsField_oGsmModem; } set { …
amertat
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Received SMS does not show in C# application

I have a C# application that receives SMSes and displays them. When I send an SMS without this program and using a GSM modem, the SMS gets saved in the GSM modem. When I start the application and click on "read SMS" it shows me only SMSes that were…
shadi
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Restart USB plugged device without restarting a computer

I am dealing with an issue that USB GSM modem throws an exception and is in the failed state until you SHUT DOWN and turn on the PC again. The "restart" does not help, because it only flushes the memory (running on Windows XP, SP3 Pro.) As I…
Vojtech B
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