Tested with
-ubuntu 16.04.6
-openssl: 1.0.2g
-node: 8.16.0

Requirements:
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
sudo apt-get install -y nodejs
sudo apt-get install -y build-essential
install python 2.7
rm package-lock.json && rm -rf node_modules && rm -rf ~/.node-gyp only (if package-lock.json/node_modules or node was installed)
sudo apt-get install libasound2-dev
sudo npm i -g node-gyp
sudo npm install --unsafe-perm

Configuration:
-For the simulation to simulate in a period, we must put the testing_period setting in settings (the value is in milliseconds)
Ex:
[settings]
max_fails = 3
send_voice = true
send_gps = true
gps_report_interval = 10000 # The interval in which the GPS is sent
gps_lat_start_point = 46.217802
gps_lng_start_point = 24.776126
testing_period = 7000 # we will simulate all the units in a period of 7 seconds

Start:
node index.js --path="./config/stage"
node ./index.js --path="./config/testing"