redanium

SIM Card Management Over GSM Modem

A small guide on how to send and receive USSD codes on Linux

I am using the built in GSM (UMTS) modem of my Thinkpad X1 extensively because I am often in places with flaky internet connections. I connect through the standard Network Manager on Ubuntu and everything works fine. There was one major annoyance though. Every time I wanted to top up the SIM balance or book a new package, I needed a phone to send and receive USSD codes. So I took some time to figure out how to do it from the shell. I wrote this down as a help for others and a reminder for myself. Without further ado...

First intsall gammu and picocom.

➜  ~  sudo apt-get install -y gammu picocom

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Iterator;
	import java.util.List;

	import javax.faces.bean.ManagedBean;
	import javax.faces.bean.SessionScoped;

	import org.apache.log4j.Logger;
	import org.exoplatform.commons.utils.secure.SecureSet;

	function getHightlightCoords() {
	var pageIndex = PDFViewerApplication.pdfViewer.currentPageNumber - 1;
	var page = PDFViewerApplication.pdfViewer.getPageView(pageIndex);
	var pageRect = page.canvas.getClientRects()[0];
	var selectionRects = window.getSelection().getRangeAt(0).getClientRects();
	var viewport = page.viewport;
	var selected = selectionRects.map(function (r) {
	return viewport.convertToPdfPoint(r.left - pageRect.x, r.top - pageRect.y).concat(
	viewport.convertToPdfPoint(r.right - pageRect.x, r.bottom - pageRect.y));
	});

	var express = require('express'),
	passport = require('passport'),
	bodyParser = require('body-parser'),
	LdapStrategy = require('passport-ldapauth');

	// Credentials from the free LDAP test server by forumsys
	// More info at: http://www.forumsys.com/tutorials/integration-how-to/ldap/online-ldap-test-server/
	var OPTS = {
	server: {
	url: 'ldap://ldap.forumsys.com:389',

	## This is a directory/file filter for WinMerge
	name: gitignore++
	desc: Ignore .git and IDE-specific files and directories

	## Select if filter is inclusive or exclusive
	## Inclusive (loose) filter lets through all items not matching rules
	## Exclusive filter lets through only items that match to rule
	## include or exclude
	def: include

	// main.js for Electron
	var app = require("app"),
	BrowserWindow = require("browser-window");

	app.on("window-all-closed", function() {
	app.quit();
	})

	var mainWindow = null;
	app.on("ready", function() {

	let hasBlobConstructor = typeof(Blob) !== 'undefined' && (function () {
	try {
	return Boolean(new Blob());
	} catch (e) {
	return false;
	}
	}());

	let hasArrayBufferViewSupport = hasBlobConstructor && typeof(Uint8Array) !== 'undefined' && (function () {
	try {

	# Based on post from: https://snipt.net/chrisdpratt/symmetrical-manytomany-filter-horizontal-in-django-admin/#L-26
	# Only reposting to avoid loosing it.

	"""
	When adding a many-to-many (m2m) relationship in Django, you can use a nice filter-style multiple select widget to manage entries. However, Django only lets you edit the m2m relationship this way on the forward model. The only built-in method in Django to edit the reverse relationship in the admin is through an InlineModelAdmin.

	Below is an example of how to create a filtered multiple select for the reverse relationship, so that editing entries is as easy as in the forward direction.

	IMPORTANT: I have no idea for what exact versions of Django this will work for, is compatible with or was intended for.

	rtmp {

	server {

	listen 0.0.0.0:1935;

	chunk_size 4096;

	# The collection server, streaming allowed from standard local /16 subnets
	# Stream to rtmp://<server ip>/collect/<stream key>


	// zoomkat 12-13-11 serial servo (2) test
	// for writeMicroseconds, use a value like 1500
	// for IDE 1.0
	// Powering a servo from the arduino usually DOES NOT WORK.
	// two servo setup with two servo commands
	// send eight character string like 15001500 or 14501550
	// use serial monitor to test

	#include <Servo.h>