HUNTSVILLE, Ala., and FAIRFIELD, N.J.— June 23, 2008 — Digium®, Inc.,the Asterisk® Company, and Critical Links, a global provider of converged voice, data and IT solutions for SMBs, announced today that Digium will be the exclusive vendor of Asterisk-compatible analog and digital PCI and PCIe telephony boards for Critical Links’ flagship edgeBOX™ product line. Critical Links has extensively tested Digium boards to ensure compatibility with edgeBOX and chose Digium over other competitors.

Digium is the creator and driving force behind Asterisk, the open source telephony software deployed by more than 4 million servers worldwide to manage voice over IP (VoIP) calls for businesses and individuals. More resellers, telecom professionals and software developers choose Digium’s products than those of any other open source telephony company because only Digium delivers the technical superiority, security and flexibility associated with Asterisk. Asterisk powers Digium’s family of software and hardware appliances, including Switchvox™, Asterisk Business Edition™ and AsteriskNOW™.

“Open source Asterisk provides the key IP telephony component of our edgeBOX feature set. In evaluating vendors of digital and analog telephony cards for Asterisk-based solutions, Digium was an obvious choice,” said Abdul Kasim, vice president, global business development and marketing, Critical Links. “Digium’s active support of open source Asterisk provides us with a low-cost VoIP development platform on which to develop our commercial value-added products. In evaluating card vendors, it became clear that no other vendor can match Digium’s total package of guaranteed quality, breadth of product, core Asterisk support capability, and connection to the Asterisk project.”

Critical Links is a global provider of converged voice, data and IT solutions for SMBs that dramatically simplify and cost-reduce by consolidating over a single scalable and fault-tolerant platform.

The partnership between Digium and Critical Links includes analog telephony cards (4-, 8- and 24-part analog cards) and digital telephony cards (single-, dual- and quad-span T1/E1 cards and ISDN BRI cards).

“Digium is excited to work with Critical Links and the impressive group of international carriers that have built their service upon the edgeBOX product line,” said Bill Miller, Digium’s vice president of product management and marketing. “The agreement provides an excellent opportunity for Digium to access new audiences with our new line of digital and analog telephony cards, which are covered by the Digium Exceptional Satisfaction Program – the strongest quality guarantee in open source telephony.”

About Critical Links
Critical Links is a global provider of converged voice, data and IT solutions for small and medium businesses (SMBs) that dramatically simplify and cost-reduce by consolidating over a single scalable and fault-tolerant platform.

Critical Links’ flagship product, the edgeBOX™, is an award-winning multi-function gateway appliance that includes VoIP/IP-PBX, VPNs, security, NAC, QoS and a WiFi access point as well as a fax server, web server, e-mail server, print server and data storage. It is available on a range of hardware platforms that support up to 300 users, with different form factors and a host of broadband interfaces such as BRI/PRI(T1/E1), FX0/FXS, Ethernet, etc. Critical Links typically serves SMBs through a global network of VARs, System Integrators, OEMs and Service Providers. For more information: www.critical-links.com or info@critical-links.com.

About Digium
Digium®, Inc., the Asterisk® Company, created, owns and is the innovative force behind Asterisk, the most widely used open source telephony software. Since its founding in 1999, Digium has become the open source alternative to proprietary communication providers, with offerings that cost as much as 80 percent less. Digium makes Asterisk software available to the open source community and delivers Asterisk Business Edition and Switchvox IP PBX software to power a broad family of products for small, medium and large businesses. The company’s product line includes a wide range of hardware to enable resellers and customers to implement turnkey solutions or to design their own voice over IP (VoIP) systems. More information is available at www.digium.com.

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