Inter-Tel to Display Latest IP Communications Platforms at VoiceCon Fall Conference


Inter-Tel(R) 7000 and Inter-Tel(R) 5600 on Exhibit Throughout Enterprise Communications Conference

TEMPE, Ariz., Aug. 17 -- Inter-Tel (Delaware), Incorporated (NASDAQ:INTL), a leading provider of voice and data communications systems for businesses, will showcase its two latest IP communications systems at the VoiceCon Fall 2006 Conference, August 21-24, at the Moscone Center in San Francisco. The company will display its soon-to-be-released Inter-Tel 7000, an enterprise-scale, standards-based multimedia communications platform, and the Inter-Tel 5600, an IP-centric system that supports up to 250 IP devices and 96 digital and analog endpoints, at booth #225.

"VoiceCon Fall 2006 presents us with an exciting opportunity to demonstrate our most recent achievements in Voice over IP technology," said Craig W. Rauchle, president of Inter-Tel. "The Inter-Tel 5600 is a compelling solution for small- and mid-size businesses looking to leverage the power of IP technology, and we are eager to showcase the capabilities of the Inter-Tel 7000, which has already received a great deal of attention as a pure standards-based SIP softswitch that scales to 2,500 users. The Inter-Tel 7000 is designed to offer a number of embedded presence and mobility features, along with the reliability and flexibility that enterprises demand."

In addition to exhibiting its solutions, Ross McAlpine, president of Inter-Tel NetSolutions(R), Inc., will discuss managed services options for businesses in a roundtable discussion on August 22 at 2 p.m. John Hendrickson, manager of Information Services for the Laurel Grocery Company, will share how his company uses Inter-Tel's collaboration technology to improve its business processes in a live case study set for noon on August 24. Inter-Tel will also conduct a product briefing at 2:45 p.m. on August 22.

"VoiceCon is regarded as one of the foremost events for businesses that have an interest in learning how to best deploy Voice over IP solutions," noted Jeffrey T. Ford, chief technology officer for Inter-Tel, "and we look forward to sharing our expertise in how VoIP can help them improve their most fundamental business processes, such as generating revenue, improving customer service and controlling costs."

About Inter-Tel (Delaware), Incorporated

Inter-Tel (NASDAQ:INTL) offers value-driven communications products; applications utilizing networks and server-based communications software; and a wide range of managed services that include voice and data network design and traffic provisioning, custom application development, and financial solutions packages. An industry-leading provider focused on the communication needs of business enterprises, Inter-Tel employs approximately 1,900 communications professionals, and services business customers through a network of 59 company-owned, direct sales offices and approximately 350 authorized providers in North America, the United Kingdom, Ireland, Australia and South Africa. More information is available at www.inter-tel.com.

CONTACT: Norman Stout, CEO, +1-480-449-8900, or Craig W. Rauchle, President and COO, +1-775-954-1200, or Jeffrey T. Ford, Sr. Vice President and CTO, +1-480-449-8900, or Kurt R. Kneip, Sr. Vice President and CFO, +1-480-449-8900, or Jeanne Leckie, Vice President of Marketing, +1-480-961-9000, all of Inter-Tel (Delaware), Incorporated

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