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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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Getting Error in sending text message using AT commands through C#

I'm experiencing difficulty using AT commands. I've a GSM Modem connected as Com port with my pc. My code works fine when sending sms but the sent message is not in correct format. For example I sent 'Hello World' but the sent message shows '??' in…
Syed Ahmer
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GSM & SD not working together Arduino

I am trying to make a GSM shield work together with an SD shield i.e. everytime a message is received it should be saved to the SD card. However this doesn't seem to work. The strange thing is errors seem to pop up at different places each time.…
Daan
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AT Command — forwarding call

I try to forward an incomming call via this AT-Command: AT+CCFC=1,1,"+4930xxxxxxxx",145; But it isn't working (on the M10 Quectel GSM Shield from Arduino). My second approach is doing this with an USSD-Line wrapped in a AT-Command like…
erikfx
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Python read ussd response with GsmModem in human-readable string (en)

i am using gsmmodem package, and trying to get response from USSD code which i am sending. USSD code execution works fine, but response is not in proper format (non-human readable) i want to get it in readable format. Please check code here from…
Ashfaque Ali Solangi
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Update Location and Time After Vehicular Accident via Facebook

I am a 4th year student studying Electrical Engineering. I'm doing a project for my final year about car security and a protection system. The first part of my project is to track stolen vehicle and send location update to owner's phone. I'm using…
user5006384
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Finding unique ID for android phone devices

Does TelephonyManager. getDeviceId () returns different ID If user changes his mobile network in settings from GSM to CDMA , WCDMA (or vice versa from CDMA to GSM ) ? Or does TelephonyManager. getDeviceId () returns an IMEI id when network…
ygngy
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Using Arduino GSM shield (with SIM900) to send sensor data to my website via packets

I would like to send live sensor data (say every 1 hour) to my own web page. I'm using GSM/GPRS shield with Arduino. The GSM module I'm using is SIM900.
Arjun
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GSM network network overhead issue

I am try to learn GSM network issues. I would like to know more about in detail "Trade-off between network overhead and call setup time". why network overhead will occurs and how it reflect on call setup time
Mallikharjuna Rao
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SMPP connect to server and send with GSM

GoodDay Masters, I want to know what is the configuration on how to connect SMPP into my server, I want my SMPP automatically reply on the text message on what subscriber what to know. example: subscriber A text Trucker ABC 123 then SMPP reply…
r.paul Ǿ
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How send sms from websites using asp.net c# without third party sms gate way

I use in website two fields txtmono and txtmsg and one button btnsend. I want to send sms under button btnsend. I use one GSM Modem (3G). Thanks.........
user2428255
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How to get mobile number by using SIM card serial number only

I want to get mobile number by using sim card serial number only. Is there any way to get it?? Please let me know. Hope to hear from you soon. Regards, Parmanand Soni
Parmanand
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How to read SMS from arduino Gboard

// libraries #include // PIN Number //#define PINNUMBER "" // initialize the library instance GSM gsmAccess; // include a 'true' parameter for debug enabled GSM_SMS sms; char remoteNumber[20]; // Holds the emitting number void…
jalpan
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Using GPS data for vehicle tracking where there are no cellular services

I am working on a project that deals with GPS based tracking of vehicles. I want to know if we can use GPS data for real time tracking of vehicles in areas where there are no cellular services.
Ibrar Hussain
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Connect to Internet with GSM: modem connected, no Internet

I am connecting to my USB modem on a COM port and sending him commands: AT+CGDCONT=1,"IP","internet" AT$QCPDPP=1,1,internet,internet AT_OWANCALL=1,1,1 AT_OHCIP? modem is answering and I can see that leda are lighting as where there is connection…
Chris
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beginner in GSM: develop GSM locator

i'm a beginner, and i trying build a GSM embedded device that could send SMS to a mobile phone, so that the phone can locate the location of the device. I have searched this website for similar topic, what come to me is triangulation calculation. My…
ken lee
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