I have a linux server (Red Hat 4) with one serial port connection to an embedded linux device, and another serial port connection to a power controller for that device. My current way to control th...

I want to make a call using my GSM modem. So I wrote the below program: import time import serial recipient = "+98xxxxxxxxxx" phone = serial.Serial("COM10", 115200, timeout=5) try: time.sleep(0...

Hi Is there any way to connecting to computers via Dial Modem without internet? Like windows Hyper terminal. making connection sending files between computers. Just Connection Between two Computers...

I have to control a modem Cinterion ELS61 with a host application. Can anyone tell me in simple words which is the real difference among at+creg?, at+cgreg? and at+cereg? commands? I know that cgre...

I'm using a SIM868 module and I was using my usual SIM card with no problem, but now I have bought a new SIM card and has no pin. I need to add a PIN code in order to have more security. I have ch...

I would like to send AT command to my modem by using shell script and parse the result in order to verify if the OK is returned. at=`echo -ne "AT+CFUN1=1\r\n" > /dev/ttyUSB0 | cat /dev/ttyUSB0`...

I'm currently writing a small tool for a linux router that sets up a wwan (gsm/3g) connection when I plug an appropriate modem into its USB port. When the device is plugged in several ttys are regi...

Manufacturer: huawei Model: E3533 Revision: 22.318.27.00.00 IMEI: 353934033009021 +GCAP: +CGSM,+DS,+ES AT+CMGS command work well. OK AT+CMGS="99667788" > test sms +CMGS: 45 OK AT+CMGL="...

I am trying to make an automatic answering and calling machine in python and linux, but so far I was able to only call a number. When it comes to sending sounds or recording them I had no success....

Every now and then, the radio of my android phone silently dies because of some network related issues. On the Nexus 4, it shows the empty triangle as if there where no service available in this ar...

I a doing a weird project, and looking to convert some short, simple datagrams to audio - send them over a (physical) radio - then to receive and decode them on another device (think - embedd...

I am using GsmComm to connect to usb modem. The com ports for the modem I am using doesn't show up in device manager when I initially connect the modem to the computer. Computer shows it as a remov...

I have a script that gets the signal strength from a external Ericsson F3507gw modem, which is connected in: ttyACM0: mobile broadband data modem ttyACM1: mobile broadband modem ttyACM2: GPS port ...

A button, when clicked, sends an sms to the number entered in NumTxt textbox, and sends the text entered in SMSTxt textbox. Port name entered in texbox ComPort Here's the event handler of the butto...

I am trying to connect external GSM modem with nexus 5 and send AT command using android RIL layer.I am using android 5.0 AOSP for nexus 5 downloaded from Google source. Error: Permission denied w...

Im new to GSM and AT command sets, based on the error +CMS ERROR: 304 its a Invalid PDU mode parameter according to activexperts Im trying to send message using AT command to GSM modem in PDU mod...

I want to send SMSs in PDU mode. I have checked the spec for my modem, and it supports PDU mode. I have developed a PDU encoder and decoder, but now I do not know how to send data to my modem. I ...

With some older cell phones, you can connect them to a computer and use them as a Dialup/FAX modem (to connect to a dialup ISP for example). I have been trying to find out if this possible with And...

I would like to know high level idea of how Android Modem code will call/pass message to Android application layer. Say we take SMS for example. If network sends SMS and Modem (say Qualcomm C code ...

I'm working on an Android application that can get low level information from a GSM modem. It depends on sending AT-Command to the modem and receive the answer. The application is done but there se...

I'm working with an application which connects to Huawei 3G Modem using COM ports in php. Here is my code: <?php include("sms.php"); $sms = new sms(); $device = "COM11"; exec("mode $device BAUD...

I'm trying to get the SIM number (ICCID, not IMSI) of my 3G Huawei E5830 modem using AT commands (also called Hayes command set). Unfortunately, it's not specified in the modem formal documentatio...

I'm having a problem with Python and passing a serial object as a parameter to a separate process. The program is being run in Windows 8, so using global variables isn't an option. from multiproc...

I'm working on the firmware of a device that is going to be connected to PCs using Bluetooth in serial port emulation mode. During testing, I found out that modem-manager on Linux "helpfully" trie...

I want to play a WAV file over GSM modem. Here is my sample code private final int BUFFER_SIZE = 8; private File soundFile; private AudioInputStream audioStream; private AudioFormat audioFormat; p...