What is Asterisk


Asterisk is the world’s leading open source telephony engine and tool kit. Offering flexibility unheard of in the world of proprietary communications, Asterisk empowers developers and integrators to create advanced communication solutions...for free.

Asterisk® is released as open source under the GNU General Public License (GPL), and it is available for download free of charge. Asterisk® is the most popular open source software available, with the Asterisk Community being the top influencer in VoIP. As the Asterisk Source code is available for free there is no cost for the software itself and no license required, only the hardware and configuration required to setup the service.


Asterisk as a Switch

  1. Asterisk can be configured as the core of an IP or hybrid PBX, switching calls, managing routes, enabling features, and connecting callers with the outside world over IP, analogue (POTS), and digital (T1/E1) connections.

    Asterisk runs on a wide variety of operating systems including Linux, Mac OS X, OpenBSD, FreeBSD and Sun Solaris and provides all of the features you would expect from a PBX including many advanced features that are often associated with high end (and high cost) proprietary PBXs. Asterisk's architecture is designed for maximum flexibility and supports Voice over IP in many protocols, and can interoperate with almost all standards­based telephony equipment using relatively inexpensive hardware.


Asterisk in a Call Center

  • Asterisk has been adopted by call centres around the world based on its flexibility. Call centre and contact centre developers have built complete ACD systems based on Asterisk. Asterisk has also added new life to existing call centre solutions by adding remote IP agent capabilities, advanced skills­based routing, predictive and bulk dialling, and more.

Asterisk in Network

Internet Telephony Service Providers (ITSPs), competitive local exchange carriers (CLECS) and even first­ tier incumbents have discovered the power of open source communications with Asterisk. Feature servers, hosted services clusters, voicemail systems, pre­paid calling solutions, all based on Asterisk have helped reduce costs and enabled flexibility.


Interoffice Communication

The Gold Coast VOIP PBX can connect to multiple offices with the use of additional core systems, allowing free communications between remote extensions. Most mobile devices capable of internet services can also register directly with the core system allowing mobile extensions anywhere internet connectivity is available.

Attached below is an example network setup using 5 extensions in each office each with one hardware phone. Hardware devices are recommended for easy remote support services.