Servers for VoIP

IP PBXs are either standalone devices such as an appliance or software running on a server. On this website, we tend to concentrate on the PBX portion but there is still a lot to discuss about the server side. This section on Servers for VoIP discusses the other side of the PBX with a focus on a VoIP distribution of Asterisk PBX.

This section is divided into the following areas:

Introduction to Linux - Linux is a derived from Unix. This section discusses the Linux operating system, commonly used commands and a quick overview of how it fits together. Typically VoIP systems run on a Linux or Unix based operating system.

Daemons - Services that run in the background of a server are called daemons. This section discusses the various services that run in order to create a PBX environment and also the Webmin management tool to configure and monitor the services. This section discusses the various services: TFTP, DHCP, DNS, FTP, WWW, etc. that run in order to create a PBX environment and also the Webmin management tool to configure and monitor the services.

Server Security - This section examines the security aspect of servers and what can be done to prevent unauthorized access. The iptables firewall, fail2ban and Webmin's Linux Firewall GUI for iptables discussed.

Scalability - As the company grows, more demand and load will be put on the server. How can you scale a server to meet new demands? This section discusses different methods to scale the server to meet increased demand.

Virtualization - The advantages and disadvantages of the virtual environment will be discussed. Examples of different virtualization environments like VMware and Proxmox will be examined.

Server Hardware - Most people of knowledgable about PC hardware but what makes a server different? This section looks at the different types of servers, the hardware inside the "box", the drive configurations, the interfaces, unique configurations and management interfaces.

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Copyright July 2013 Eugene Blanchard