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Questions tagged [gsmcomm]

36 questions
7
votes
1 answer

Using GSMComm Library Get USSD Result

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 = ConnectAndGetComm(); string data =…
Shafikul Islam
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6
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2 answers

How to concat long SMS in GSMComm Library?

Here is my code: According to this page the CreateConcatTextMessage method returns an array with type SmsSubmitPdu[] but, when I try to send it with SendMessages I get a MessageServiceError 500. What am I missing? SmsSubmitPdu[] pdu2; …
Dac
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3
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1 answer

Send At Command to gsm modem with Java

I am trying to make a program to send a sms. I wrote the program but doesn't successfully send the message. My program send an At command to the Port COM in my computer but I do not get a response from my gsm modem. I am using COM terminal (Temp…
przemo199980
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2
votes
1 answer

Is it possible to install OS over Quectel LTE 4G OR NB-IoT Modules?

I would like to install any OS with minimal functionality on the Quectel 4G-NB-IoT module (BG-96, BG-95-M3). Will those modules support this features? If yes: which OS should I prefer? (ANDROID, LINUX, Any Other). Will you please help me to know…
shiv patil
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2
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2 answers

How to know the network status of SIM800 module using AT command?

In my current scenario, I'm using NETLIGHT Pin (Pin no. 64) of SIM800 module with my PIC microcontroller to know whether my module is registered or not? This way I built the circuit. Just I removed LED from VBAT. Then I connect collected of NPN…
appleBoy21
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2
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1 answer

GSMComm SMS delivery report

I've been trying to use GSMComm library in a C# app, in order to sent SMS messages using a mobile phone (connected via USB cable) as a GSM modem. I've read all similar threads in SO, but didn't help. Everything works well, except the delivery…
ion
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vote
1 answer

GSM modem, USSD with AT command throwing error

I am using a LilyGo-T-SIM7000G to send readings from my remote device ( newest firmware ). I need to know how much Airtime is left on the SIM card so I can recharge it when it is low so the device keeps on sending me the information I need. I have…
Spider999
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1
vote
1 answer

How to identify and concatenate fragmented long SMS messages into a complete SMS in PDU mode?

I am working with GSM modem via AT Command interface to read all the messages stored on SM memory, PDU mode. AT+CMGF=1 AT+CMGL=4 The return is +CMGL: 1,"REC READ","53030303","","2017/07/10…
mincasoft
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1
vote
0 answers

Read long sms from modem

I read some SMS from the modem (by AT command). I use gsmcomm library. I save read SMS as a string. But gsmcomm work with List of smsPDU.. I have some code- where SMS reading from device (not in a string). How convert my string to List? or add to…
Le0n
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1
vote
2 answers

Communicating with GSM modem with AT Command

I am trying to communicate with GSM modem through serial port in c#. So far i have been able to connect with it,send AT command to it and send SMS. for SMS sending,i am sending the following AT command AT+CMGF=1 /* set text mode…
Shofiqul Alam
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1
vote
1 answer

Android Connect to GSMcomm

I am trying to use my android version 4.1.1 as a GSM modem but the error "No phone connected" always comes out. I tried using many Baud rate and timeout combinations but doesn't work. I connected my phone through USB, is this correct? Or I need to…
Christian Vibora
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1
vote
2 answers

Bulk SMS application hang when sent for many SMS

i have created simple application to bulk sms using GsmComm library , Oracle database and Devexpress. I sent message for many messages (more than 25 messages) my application got hang. i assume it because of too many process. the scenario, when a…
aminvincent
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1
vote
0 answers

Send SMS using GSM Modem in ASP.NET

Is it possible to send SMS messages using GSM Modem? As I try to do this, I can't seem to send SMS. It always run failed. I am using GSM Comm library. Here is my Connect to Modem code if(ComPort.Text == "") { return; } comm =…
VincentOscar Maceda
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1
vote
0 answers

Read Short Message in gsmcomm and Store into Database

i have registered event MessageReceivedEventHandler to recieve incoming sms in modem. i am using gsmcomm library to do it. I cannot read incoming short message sms, but when incoming message didn't short message i have no problem and it worked…
aminvincent
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1
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1 answer

getting error from GSM modem after certain time

I have a GSM modem and send ussd command to it and wait for a response from that. all operation are correct when GSM modem response in lower than 5 second. but when the response is higher than 5 second i received +cusd:4 error from modem. any idea…
Mahdi_Nine
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