How to Install Kamailio SIP server on Ubuntu 18.04 | 16.04

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This brief tutorial shows students and new users how to install Kamailio SIP server and Siremis backend portal to manage Kamailio on Ubuntu 18.04 | 16.04 with Apache2 HTTP server.

Kamailio is a free, open source and flexible SIP server that is capable of handling thousands of call setups per second. It is based on OpenSER and SER. With Kamailio, you can build large platforms for VoIP and realtime communications – presence, WebRTC, Instant messaging and other applications.

To easily manage Kamailio, you will want to install Siremis web portal. This post shows you how to do that as well.

If you’re looking for an open source SIP server to run you business VoIP and realtime communication presence, the you might want to take a look at Kamailio.

For more on Kamailio social platform , please visit its home page

To get started with installing Kamailio, follow the steps below:

Step 1: Install Apache2 HTTP

Apache2 HTTP Server is the most popular web server in use. so install it since Kamailio needs it.

To install Apache2 HTTP on Ubuntu server, run the commands below.

sudo apt update
sudo apt install apache2

After installing Apache2, the commands below can be used to stop, start and enable Apache2 service to always start up with the server boots.

sudo systemctl stop apache2.service
sudo systemctl start apache2.service
sudo systemctl enable apache2.service

To test Apache2 setup, open your browser and browse to the server hostname or IP address and you should see Apache2 default test page as shown below. When you see that, then Apache2 is working as expected.

apache2 ubuntu install

Step 2: Install MariaDB Database Server

v also needs a database server to store its content. and MariaDB database server is a great place to start when looking at open source database servers to use with v.

To install MariaDB run the commands below.

sudo apt install mariadb-server mariadb-client

After installing MariaDB, the commands below can be used to stop, start and enable MariaDB service to always start up when the server boots.

Run these on Ubuntu

sudo systemctl stop mariadb.service
sudo systemctl start mariadb.service
sudo systemctl enable mariadb.service

After that, run the commands below to secure MariaDB server by creating a root password and disallowing remote root access.

sudo mysql_secure_installation

When prompted, answer the questions below by following the guide.

  • Enter current password for root (enter for none): Just press the Enter
  • Set root password? [Y/n]: Y
  • New password: Enter password
  • Re-enter new password: Repeat password
  • Remove anonymous users? [Y/n]: Y
  • Disallow root login remotely? [Y/n]: Y
  • Remove test database and access to it? [Y/n]:  Y
  • Reload privilege tables now? [Y/n]:  Y

Restart MariaDB server

To test if MariaDB is installed, type the commands below to logon to MariaDB server

sudo mysql -u root -p

Then type the password you created above to sign on. if successful, you should see MariaDB welcome message

Step 3: Install PHP 7.2 and Related Modules

PHP 7.2 may not be available in Ubuntu default repositories. in order to install it, you will have to get it from third-party repositories.

Run the commands below to add the below third party repository to upgrade to PHP 7.2

sudo apt-get install software-properties-common
sudo add-apt-repository ppa:ondrej/php

Then update and upgrade to PHP 7.2

sudo apt update

Next, run the commands below to install PHP 7.2 and related modules.

sudo apt install php7.2 libapache2-mod-php7.2 php7.2-common php7.2-gmp php7.2-curl php7.2-intl php7.2-mbstring php7.2-xmlrpc php7.2-mysql php7.2-gd php7.2-imagick php-pear php7.2-xml php7.2-cli php7.2-zip php7.2-sqlite

After installing PHP 7.2, run the commands below to open PHP default config file for Apache2.

sudo nano /etc/php/7.2/apache2/php.ini

Then make the changes on the following lines below in the file and save. The value below are great settings to apply in your environments.

file_uploads = On
allow_url_fopen = On
short_open_tag = On
memory_limit = 256M
upload_max_filesize = 100M
max_execution_time = 360
max_input_vars = 1500
date.timezone = America/Chicago

After making the change above, save the file and close out. After installing PHP and related modules, all you have to do is restart Apache2 to reload PHP configurations.

To restart Apache2, run the commands below

sudo systemctl restart apache2.service

To test PHP 7.2 settings with Apache2, create a phpinfo.php file in Apache2 root directory by running the commands below

sudo nano /var/www/html/phpinfo.php

Then type the content below and save the file.

<?php phpinfo( ); ?>

Save the file. then browse to your server hostname followed by /phpinfo.php


You should see PHP default test page.

PHP 7.2 ubuntu nginx

Step 4: Download Kamailio Latest Release

Kamailio packages are not available in the Ubuntu default repositories. In order to install it you’ll have to add its official repository to Ubuntu.

To do that, follow the steps below:

First, download and add the GPG key for its repository by running the commands below:

wget -O- | sudo apt-key add -

Next, run the commands below to create its repository file.

sudo nano /etc/apt/sources.list.d/kamailio.list

Then copy and paste the lines below in the file and save it.

deb bionic main
deb-src bionic main

Finally, update Ubuntu packages and install Kamailio.

sudo apt update
sudo apt install kamailio kamailio-mysql-modules kamailio-websocket-modules

After installing Kamailio, you can check whether it’s installed and ready by running the commands below.

kamailio -V

You should see similar lines as shown below:

version: kamailio 5.2.6 (x86_64/linux) 
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown 
compiled with gcc 7.4.0

Kamailio default configuration file is located at /etc/kamailio/kamctlrc.

For configurations, simply open the file and add your changes, then save it. To specify a domain name for your server, run the commands below to open its configuration file.

sudo nano /etc/kamailio/kamctlrc

Then edit the highlighted lines in the file and save.

# The Kamailio configuration file for the control tools.
## your SIP domain
## chrooted directory
# If you want to setup a database with kamdbctl, you must at least specify
# this parameter.
## database host
## database read only user

After making the changes above, run the script below to create a database, user and tables needed by Kamailio.

kamdbctl create

If you get access denied for root@localhost, follow the steps below to resolve.

Logon to MariaDB server by running the commands below

sudo mysql -u root

That should get you into the database server. After that, run the commands below to disable plugin authentication for the root user

use mysql;
update user set plugin='' where User='root';
flush privileges;

Restart and run the commands below to set a new password.

sudo systemctl restart mariadb.service

Now run the Kamailio script to create a database and user.

When prompted, answer with the settings below:

Enter character set name: 
INFO: creating database kamailio .
INFO: granting privileges to database kamailio .
INFO: creating standard tables into kamailio .
INFO: Core Kamailio tables succesfully created.
Install presence related tables? (y/n): y
INFO: creating presence tables into kamailio .
INFO: Presence tables succesfully created.
Install tables for imc cpl siptrace domainpolicy carrierroute
		drouting userblacklist htable purple uac pipelimit mtree sca mohqueue
		rtpproxy rtpengine? (y/n): y
INFO: creating extra tables into kamailio .
INFO: Extra tables succesfully created.
Install tables for uid_auth_db uid_avp_db uid_domain uid_gflags
		uid_uri_db? (y/n): y
INFO: creating uid tables into kamailio .
INFO: UID tables succesfully created.

Next, open the /etc/kamailio/kamailio.cfg file by running the commands below:

sudo nano /etc/kamailio/kamailio.cfg

Then add the following lines below #!KAMAILIO.

#!define WITH_MYSQL
#!define WITH_AUTH
#!define WITH_ACCDB

Save and exit.

To apply your changes, run the commands below:

sudo systemctl restart kamailio

Kamailio is now installed and ready to use.

Step 5: Install and Configure Siremis

Now that Kamailio is installed, you will need a simple web interface to manage the server. To accomplish that, install Siremis.

Siremis is a web-based interface for Kamailio SIP Server. It provides easy way to create and manage user profiles, routing rules, view accounting, registered phones and communicate with SIP server.

To get Siremis installed, you’ll want to install XML_RPC. Run the commands below to install.

sudo pear install XML_RPC2

Next, change the directory to Apache web root, install git and download Siremis packages.

cd /var/www/
sudo apt install git
sudo git clone

After that, change into Siremis folder and prepare your environment.

cd /var/www/siremis
sudo make prepare24
sudo make chown

Finally, configure Apahce2 site configuration file for Siremis. This file will control how users access Siremis content. Run the commands below to create a new configuration file called siremis.conf

sudo nano /etc/apache2/sites-available/siremis.conf

Then copy and paste the content below into the file and save it. Replace the highlighted line with your own domain name and directory root location.

<VirtualHost *:80>
     DocumentRoot /var/www/siremis/siremis
     Alias /siremis "/var/www/siremis/siremis"

     <Directory "/var/www/siremis/siremis">
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
        Require all granted
        <FilesMatch "\.xml$">
            Require all denied
         <FilesMatch "\.inc$">
            Require all denied

     ErrorLog ${APACHE_LOG_DIR}/error.log
     CustomLog ${APACHE_LOG_DIR}/access.log combined


Save the file and exit.

Step 6: Enable the Siremis and Rewrite Module

After configuring the VirtualHost above, enable it by running the commands below

sudo a2ensite siremis.conf
sudo a2enmod rewrite
sudo systemctl restart apache2.service

Finally, follow the steps below to grant Siremis user access to its database.

sudo mysql -u root -p

Enter your root password, when prompt.

Then run the SQL statement below

GRANT ALL PRIVILEGES ON siremis.* TO siremis@localhost IDENTIFIED BY 'password';

Then flush the privileges and exit


Then open your browser and browse to the server domain name or hostname. This is often localhost but can be a host name or IP address. Your server admin or hosting company will have this information available.

Begin the installation wizard

Siremis Kamailio Ubuntu

Validate that all requirements are met, then continue with the wizard.

Siremis Kamailio Ubuntu

Please enter your database configuration information below.

If you select to create Siremis database, then the user set to access it must have privileges to create it. Importing the default data inserts the records required by Siremis administration.

Siremis database is for internal use while SIP database is the one used by Kamailio – it has to be created separately (i.e., kamdbctl create). Attention: Update SIP DB is removing and recreating acc and missed_calls tables in Kamailio database.

Siremis Kamailio Ubuntu

After a brief moment, the setup should complete and provides you an admin username and password. Use the credential to login and begin setting up your environment.

Kamailio Siremis Ubuntu

Username: admin
Password: admin

That should complete the setup.


You have learned how to install Kamailio SIP server with Siremis backend on Ubuntu with Apache2 HTTP server. If you find any errors above, please leave a comment below


You may also like the post below:


  1. after successful installation, login page is weird (not aligned) and after entering default username and password, it doesn’t do anything. Pl. guide how to debug

    1. login page appeared after copying themes, images, js folder from ~/siremis/siremis to ~/siremis but after login, default admin landing page IP/siremis/system/general_default is not found. a2enmod rewrite, prepare24 commands does not generate ~/siremis/system folder. How this folder is created?

      1. I am having the same issue. Apparently this folder is not created as it’s a module!!

  2. I am getting in a popup when I type admin and admin for the first time to login
    SQLSTATE[HY000] [1045] Access denied for user ‘siremis’@’localhost’ (using password: YES)

  3. How to socket in this server

  4. Successfully I have completed Kamailio installation and I got “Siremis” GUI but the problem is when I restart Kamailio service it’s giving me the below error and Kamailio service stays down.

    Failed to start Kamailio (OpenSER) – the Open Source SIP Server.

    Please help me to solve this problem

  5. after successful installation on kmailio and siremis i am getting error “We are having trouble to find the site” on page access

    help me on this

    1. In the ServerName you have to put the ip address of your server or if you got any domain name for the server then use that. My preference is you put the IP address of the machine you are running the kamailio. Then run /siremis in your browser to start the installation process.

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