Detailed instructions for installing and configuring software such as Asterisk and Freeswitch from scratch on Linux.  If you require our services please feel free to contact us via our contact form.

Kazoo v4 Single Server Install Guide


Kazoo is a highly scalable API based VoIP telephony platform.  This guide shows how to install Kazoo v4 on one CentOS v7 server.  It can be used in conjunction with our Kazoo multiple server guide for more than one server.


To make this procedure more universal, some of the configurations are there for compatibility with multiple-server installs. 


CentOS v7 minimal ISO
BigCouch NoSQL database v0.4
HAProxy http load balancer v1.5
FreeSWITCH media server v1.6
Kamailio SIP server v4
RabbitMQ message broker v3
Kazoo v4


Create a Let's Encrypt SSL certificate for FusionPBX on Debian 9

Let's Encrypt

This assumes FusionPBX was installed using this FusionPBX install guide or the public install script.  This procedure should work for root domains, subdomains, and wildcards.

Tested using:

* Certbot v0.28 (included with Debian 9)
* Fusionpbx 4.4
* Debian 9
* Nginx


A2Billing v2.2 Install Guide




This guide will show how to install A2Billing v2.2 on CentOS v7.  It is assumed you already have Linux and Asterisk and Freepbx installed using a procedure similar to this one.  It is also assumed you have compiled asterisk realtime driver module (res_config_mysql) by selecting it in asterisk menuselect before compiling asterisk. We do not cover the installation of the callback daemon.

Tested using the following software:


Asterisk Freepbx on Debian (Debian v8, Asterisk v13, Freepbx v13)


This guide covers the installation of Asterisk and Freepbx from source on Debian v8. 


Tested on:

Debian v8 (Jessie)
Asterisk v13
Freepbx v13


Fusionpbx v4 Freeswitch v1.6 CentOS v7 Install Guide


Fusionpbx is a full featured mult-tenant GUI for Freeswitch.  This guide covers the installation of Fusionpbx and Freeswitch® with MariaDB and Apache on CentOS v7. 

Tested on:

CentOS v7
Freeswitch v1.6
FusionPBX v4
MariaDB v5.5


How to Install OpenVPN and PPTP on RHEL v7





This procedure can be used to install OpenVPN and/or PPTP VPN access on a RHEL/CentOS v7 server or virtual server.


Kamailio Supernode & Siremis GUI Install guide.

Kamailio sip router
A Kamailio supernode is a SIP router capable of user authentication and status tracking among other things.  It can be used to create a private secure peer-to-peer SIP service similar to Skype™ for example.  It can also be used to connect to other nodes, gateways, PBX's etc.  Siremis is currently the best GUI for use with Kamailio.

This guide was tested using:

CentOS 7
Kamailio v4.4
Siremis v4.4


Asterisk Freepbx Install Guide (CentOS v6, Asterisk v13, Freepbx v12)





This guide covers the installation of Asterisk® from source on CentOS. Changes in this guide compared to previous guides include the use of Asterisk v12 & v13, Freepbx v12, and the addition of the pjsip library.

Tested on:

CentOS v6 32 bit & 64 bit
Asterisk v12 & v13
Freepbx v12