Sydney, 28 August 2008 - Interactive Intelligence (Nasdaq: ININ), a global provider of unified IP business communications solutions, has released version 4.0 of its Interaction SIP Proxy™ which includes features for increased reliability, improved security and simplified deployment.

Session initiation protocol proxies are designed for distributed enterprises and call centres to more efficiently, reliably and cost-effectively route interactions between servers in SIP-based IP telephony environments. Interaction SIP Proxy™ 4.0 also adds support for secure real-time transport protocol and transport layer security standards, including certificate authentication. These security features are particularly important to companies in the payment card industry, such as Visa and MasterCard.

Interaction SIP Proxy™ 4.0 also includes new source-based routing, which enables it to route interactions based on where they originated. This helps simplify deployment and increase operational efficiencies, according to Interactive Intelligence ANZ Country Manager, Brendan Maree,

“Previously our SIP proxy could route interactions based on where they were going in the ‘to’ field, but routing based on the source where multiple servers and gateways were involved would mean increasingly complex, thus time-consuming configurations,” Maree said. “Interaction SIP Proxy™ 4.0’s new source-based routing simplifies these configurations, ultimately resulting in increased operational efficiencies.”

Interaction SIP Proxy™ 4.0 is also the first Interactive Intelligence component to be validated for virtual use with VMware ESX 3.0, thus further reducing the number of servers required in an all-SIP environment.

Interactive Intelligence is offering its SIP proxy in three versions -- Interaction SIP Proxy™, Basic; Interaction SIP Proxy™, Business Continuity; and Interaction SIP Proxy™, Load Balancer – to accommodate all sizes and requirements of distributed enterprises and contact centres. Ideal vertical industries include financial services (payment card industry), healthcare, retail and teleservices/telemarketing firms.

Interaction SIP Proxy™ 4.0 is offered with the Interactive Intelligence all-in-one IP communications software suite or as a standalone proxy to work with third-party communications application products.

It is available immediately through the company’s global channel of more than 350 resellers throughout the America’s, Canada, Europe, Middle East, Africa and Asia Pacific.

For more information about Interaction SIP Proxy™, visit: http://www.inin.com/ProductSolutions/Pages/Interaction-SIP-Proxy.aspx.

About Interactive Intelligence

Interactive Intelligence Inc. (Nasdaq: ININ) is a global provider of unified business communications solutions for contact center automation, enterprise IP telephony, and enterprise messaging. The company was founded in 1994 and has more than 3,000 customers worldwide. Interactive Intelligence is among Software Magazine’s top 500 global software and services suppliers, is ranked among NetworkWorld’s top 200 North American networking vendors, is a BusinessWeek “hot growth 50” company, and is among FORTUNE Small Business Magazine’s top 100 fastest growing companies. Interactive Intelligence employs approximately 600 people and is headquartered in Indianapolis, Indiana. It has six global corporate offices with additional sales offices throughout North America, Europe, Middle East, Africa and Asia Pacific. Interactive Intelligence can be reached at +61 2 8918 4800 or info@inin.com; on the Net: http://www.inin.com