Digium™ is the creator and primary developer of Asterisk™, the industry's first Open Source PBX. Used in combination with Digium's PCI telephony interface cards, Asterisk offers a strategic, highly cost-effective approach to voice and data transport over TDM, switched, and Ethernet architectures.

Digium solutions reduce the costs of traditional TDM and VoIP implementations through Open Source, standards-based software and next-generation gateways, media servers, and application servers. Digium hardware supports traditional voice protocols, including PRI, RBS, FXS, FXO, E&M, Feature Group D, Groundstart, Loopstart, and GR-303. Data protocols include PPP, Cisco HDLC, and Frame Relay. For packet voice, Asterisk supports IAX™ (Inter-Asterisk eXchange), SIP, MGCP, Skinny (SCCP), and H.323 VoIP protocols.

Digium Cards With Echo Cancellation:

Because Digium is the creator of Asterisk, Digium hardware is designed specifically with Asterisk in mind. Digium hardware supports the full range of voice and data protocols that Asterisk supports. Digium hardware has been proven and tested in a wide range of installations worldwide. Digium has created an entire line of PCI hardware to unlock the power of Asterisk. Create the ultimate Asterisk PBX on your own Linux server with Digium's line of digital and analog cards which reduce the costs of traditional TDM and Voice Over IP implementations through open source, allowing full customizability.

Asterisk was designed to be able to do everything a traditional telephone system can do, and much, much more. Asterisk is, at it's heart, a PBX system. However, it includes a whole host of telephony features such as voicemail and call conferencing. Asterisk creates a PBX that rivals the features and functionality of traditional telephony switches. Asterisk is cost-effective, low-maintenance, and flexible enough to handle all voice and data networking. With Asterisk software, Digium hardware, and a common PC, anyone can replace an existing switch or complement a PBX by adding VoiceOverIP, voice mail, conferencing, and many other capabilities. Asterisk integrates with analog phones and most standards-based IP telephone handsets and software.

Proven through installations around the globe, and connecting the corner office to the most remote company outpost, Asterisk is solid and stable in either small office or Enterprise environments. Asterisk greatly reduces the cost of traditional telecommunication technology and operation, and moves voice over IP, VoIP, to the mainstream. Asterisk integrates a pre-existing analog telephone network with the benefits of IP technology, greatly reducing costs.