Asterisk offers an open source solution for IP PBX implementation. It is, in fact, the most popular open source software currently available online and for good reason. Asterisk is both an open source telephony engine and a cutting-edge program for both private users and small business owners who want to use IP PBX.
How it Works
Asterisk implements IP PBX for users who wish to phone others within a local network, as well as make external phone calls. VoIP users can even connect to the PSTN (Public Switched Telephone Network). IP PBX offers countless features unavailable to analog telephone users, not to mention the ability to place VoIP-to-VoIP, VoIP-to-analog or analog-to-analog calls.
What You’ll Need
Asterisk is an open source program, which means it is free for download by the public. In order to use the program, you will need VoIP service installed and functioning. To be used as an IP PBX, you must also configure a dial plan. A dial plan will be the preset pattern of numbers that is used in your location. For instance, the United States uses a 10-digit dial plan with a 3-digit area code.
Types Offered
Since Asterisk is an open source program, it is constantly evolving. For that reason, current versions are periodically updated with patches, optional add-ons and more. Asterisk also offers an open source application called AsteriskNOW. This offers a graphical interface to those who don’t possess advanced IT knowledge, particularly where Linux is concerned.