DALLAS - July 26, 2007 - Jetstream Public Relations, Inc., a Dallas-based agency specializing in marketing and media relations for high-tech and emerging growth companies, has been named agency of record by Cistera Networks, Inc. (OTCBB: CNWT), a leading provider of enterprise application platforms and engines for IP Communications.

"Jetstream PR is a nimble and highly responsive agency that gets great awareness-building results for clients, and they share Cistera's passion for growing a business," said Cistera Networks CEO Derek P. Downs. "Jetstream can match Cistera's entrepreneurial energy, and their high-tech experience makes them comfortable with complex topics. Most important, Jetstream knows how to capture the attention of the news media, analysts and other influential audiences by communicating the benefits of our applications rather than focusing on the technology itself."

Cistera Networks makes enterprise IP communications a reality by setting the new standard in advanced IP phone application platforms and engines for the enterprise environment. The award-winning Cistera Convergence Server^TM uses the industry-leading Cistera Enterprise Platform for IP communications to provide solutions for Event Alerting and Notification, Quality Assurance and Compliance, and Unified Communications for healthcare, financial services, education, and local and state governments.

"Cistera is a great fit for Jetstream because it's an entrepreneurial company with hard-working, visionary leaders who are committed to their technology making a difference for people and enterprises around the world," said Tony Katsulos, president and founder of Jetstream PR. "The telecom industry's resurgence is being led by market leaders like Cistera that are creating the communications and collaboration tools that businesses, schools and governments need to work effectively in an increasingly IP-based world. We are excited to join Cistera at such an important time."

Liolios Group, Inc. will continue as Cistera's investor relations firm.

About Jetstream Public Relations
Jetstream Public Relations, Inc., helps companies drive revenues by increasing awareness of their products and services through media relations, marketing and other activities. Based in Dallas, Jetstream PR was founded in early 2002 and is staffed by business-savvy communicators with a variety of journalistic, corporate and agency experience. Jetstream PR supports companies in all phases of growth. The firm is particularly effective at generating results for clients that are launching, re-defining or expanding their product/service offerings. For more information, please visit www.jetstreampr.com.

About Cistera Networks
Cistera Networks makes Application Driven Telephony a reality by setting the new standard in advanced IP phone application platforms and engines for the Enterprise VoIP Telephony environment. The Cistera ConvergenceServer^TM (CCS) uses the industry-leading Cistera Enterprise Platform for IPT to provide Unified Application Administration as well as Fault and Performance Management for enterprise IPT Application deployments. Cistera provides next-generation solutions for numerous vertical markets including education, finance, healthcare and government. Cistera Networks maximizes IP phone capabilities - taking the communications platform to an entirely new level. For more information, please visit: www.cistera.com.