Contact:
Rick Segrest
Digium, Inc.
(256) 428-6200
rsegrest@digium.com

Janine Savarese
MRB Public Relations
(732) 758-1100 Ext. 103
jsavarese@mrb-pr.com

Digium Asterisk Pavilion at Spring VON to Highlight Successes Based on Asterisk Technology

HUNTSVILLE, AL and SAN JOSE, CA — (March 14, 2006) — Digium Inc., the creator of Asterisk™ and pioneer of open source telephony, today announced the group of companies showing their Asterisk-based business applications in the Asterisk pavilion (Booth #809) at Spring VON 2006 in San Jose, CA on March 14-17. The pavilion will showcase twelve Asterisk based successes from the following vendors:

• Aculab
• Aheeva
• Bird's the Word
• Citel Technologies
• Esna Tech
• Intel
• IPsando
• LumenVox
• Ranch Networks
• Switchvox
• VoIP Reach
• Zimbra

"Asterisk has had a major impact on the telecom market, and companies and resellers are generating significant profits as a result," said Mark Spencer, president of Digium. "At VON, attendees will be able to experience how VoIP firms are leveraging Asterisk in developing their next generation services, and this will be a great example of how companies are deploying complex business applications based on the open source model."

Spring VON attendees will have the opportunity to see Asterisk and Asterisk Business Edition running in a host applications ranging from VoIP security, speech recognition, call center solutions, and IP PBX turnkey VoIP services. Digium will also be announcing a number of new products and a partnership with a major technology vendor at the show.

About Digium
Digium is the creator and primary developer of Asterisk, the industry's first open source PBX for the Linux operating system and Asterisk Business Edition, the professional-grade version of Asterisk. 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, Cisco Skinny® (SCCP), and H.323 VoIP protocols.

About Asterisk
Code for Asterisk, originally written by Mark Spencer of Digium Inc., has been contributed from open source software engineers around the world. It supports a wide range of TDM protocols for the handling and transmission of voice over traditional telephony interfaces. It also supports US and European standard signaling types used in standard business phone systems, allowing it to bridge between next-generation voice-data integrated networks and existing infrastructure. Using the Inter-Asterisk eXchange (IAX™) Voice over IP protocol, Asterisk merges voice and data traffic seamlessly across disparate networks. While using packet voice, it is possible to send data such as URL addresses and images in-line with voice traffic, allowing advanced integration of information.

The Digium logo, Digium, Asterisk, Asterisk SCF, Switchvox, Asterisk Business Edition, AsteriskNOW, Asterisk Appliance and the Asterisk logo are trademarks of Digium, Inc. All other trademarks are property of their respective owners.

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