Below is a quick overview of some open source telephony software options. Links have been provided to download each platform. To view Asterisk open source telephony related postings, visit: http://www.voipsuperstore.com/support/category/asterisk/.
Asterisk is the world’s leading open source PBX, telephony engine, and telephony applications toolkit. Offering flexibility unheard of in the world of proprietary communications, Asterisk empowers developers and integrators to create advanced communication solutions…for free. Asterisk is extremely powerful and is best suited for skilled developers.
Check out various phone systems based on Asterisk:
Trixbox is managed by Fonality. They offer Trixbox CE (Community Edition) which is the free open source edition as well as Trixbox Pro, which is the commercial paid edition. Trixbox CE provides a user friendly graphical interface and integrates several commonly used tools.
Elastix is an appliance software that integrates the best tools available for Asterisk-based PBXs into a single, easy-to-use interface. It also adds its own set of utilities and allows for the creation of third party modules to make it the best software package available for open source telephony.
The goals of Elastix are reliability, modularity and ease-of-use. These characteristics added to the strong reporting capabilities make it the best choice for implementing an Asterisk-based PBX. Visit the Elastix site to download.
Download the famous Elastix Without Tears book!
Check out the new Elastix integrated hardware appliances: