Asterisk PBX

Asterisk was originally created as the engine for a PBX system (in fact, many refer to it as the Asterisk PBX) and includes all of the components necessary to build a powerful, scalable business phone system. These include advanced features that usually cost extra on a commercial phone system: things like voicemail, automated attendant, call queueing, conference bridging, parking, paging, and intercom calling.

Asterisk is technology and protocol agnostic, which means that you can connect it to the outside world using VoIP or traditional telephony technologies. It also means that you can use virtually any standards-based IP phone: Asterisk includes drivers for SIP and other protocols. That being said, Digium offers a line of IP phones that were specifically designed to compliment Asterisk and take advantage of a number of key productivity features.

Asterisk is future-proof. Unlike traditional phone systems that are generally upgraded using a forklift, Asterisk continues to evolve. Phone systems based on Asterisk see significant improvements each year as new features are included.


Asterisk-based telephony solutions offer a rich and flexible feature set. Asterisk offers both classical PBX functionality and advanced features, and interoperates with traditional standards-based telephony systems and Voice over IP systems. Asterisk offers the advanced features that are often associated with large, high end (and high cost) proprietary PBXs. The list below includes a sample of the features available in Asterisk.

Automated Attendant (IVR) Blacklists
Blind Transfer Call Detail Records
Call Queues Conference Bridging
Dial By Name Music On Hold
Three Way Calling Voicemail
What We Do With Asterisk

We specialize in building solutions based on Asterisk. We deliver a full-featured PBX solution at a small fraction of the cost of proprietary telephony systems. Based on the rock-solid Linux operating system, our PBX solutions are both powerful and scalable.

Ready To Take The Next Step?

To learn more about how your company can benefit from Graysmark Business Systems, please contact us.