Daleen's BillPlex Deployed By OnSite Access for Customer Management and Billing.

Business Editors & Technology Writers

BOCA RATON, Fla.--(BUSINESS WIRE)--Feb. 23, 2000

Convergent System's Open Architecture and Rich Feature Set

Ideal for Building-Centric Communications Provider

Daleen Technologies Inc. (Nasdaq: DALN), a leading provider of solutions that bond businesses and customers in the digital economy, announced today that it has completed the implementation of its BillPlex(R) customer management and billing system for OnSite Access, Inc. one of the nation's fastest growing building-centric integrated communications providers.

OnSite Access has contracts to offer voice, data, high-speed Internet access, as well as broadband content and application services, to tenants in commercial real estate properties in 22 metropolitan markets across the United States. The deployment of Daleen's BillPlex system marks the first phase of OnSite Access' move towards implementing highly automated customer management and back-office systems.

"As we continue to expand our presence and customer base in North America, it is vitally important that OnSite Access have robust customer management and back office capabilities to support our growth," said Scott Jarus, President and COO of OnSite Access. "Daleen's BillPlex system provides us with a valuable billing and customer management solution which delivers the flexibility and scalability we require to service our customer's needs now and into the future."

"We are pleased to be working closely with OnSite Access and are confident that BillPlex will prove to be a valuable and effective tool for their growing infrastructure," said Jim Daleen, CEO of Daleen Technologies. "BillPlex is an ideal billing and customer management solution for OnSite Access because it can support any service on any network. This makes it the right choice not only for today, but for years to come, as new communications and information services emerge."

Through its Billing Application Framework, BillPlex provides an application programming interface (API) that enables rating plug-ins to accommodate new services without the need for costly and time consuming programming changes. BillPlex also has an event-driven architecture at the heart of its convergent design, which allows it to provide universal service support.

About Daleen Technologies, Inc.

Founded in 1989, Daleen (Nasdaq: DALN) is a leading provider of solutions that bond businesses and customers in the digital economy. Daleen's software solutions provide mission critical support to businesses who offer voice, data, web and applications hosting services over packet and circuit-switched networks. The company distributes its eBusiness, OSS gateway, service activation and BillPlex(R) products throughout the world via Business Alliance Partners and other leading certified systems integrators including AMS, Business Edge, Cap Gemini, Danet, Ernst & Young and Unisys. Daleen is an active participant and provides leadership in industry forums such as the Ordering and Billing Forum (OBF), Internet Protocol Data Record (IPDR) working group and the Application Service Provider (ASP) Consortium. In addition to its Boca Raton, FL headquarters, Daleen has regional offices located throughout the United States and Canada. For additional information regarding Daleen's products and services, visit the company web site at www.daleen.com.

About OnSite Access

OnSite Access, Inc. is one of the nation's fastest growing building-centric integrated communications providers, serving small- and medium-sized business customers within multi-tenant commercial office buildings. OnSite Access offers a suite of communications products, including local and long distance voice services, data, high-speed Internet access and enhanced services to its customers through its broadband communications networks and building-centric approach.

Headquartered in New York City, OnSite Access is operational in the following markets: Baltimore, MD; Boston, MA; Chicago, IL; Dallas, TX; Ft. Worth, TX; Hartford, CT; Houston, TX; Long Island, NY; Los Angeles, CA; New York, NY; Northern New Jersey; Oakland, CA; Orange County, CA; Philadelphia, PA; Riverside, CA; Sacramento, CA; San Francisco, CA; San Jose, CA; Stamford, CT; Ventura, CA; Washington, D.C.; and Westchester, NY. For more information, please visit the company's Web site at www.onsiteaccess.com.

OnSite Access and Building-Centric are service marks owned by OnSite Access, Inc.

The statements contained in this press release may contain "forward-looking statements." Actual results may differ materially from those anticipated in such forward-looking statements. All forward-looking statements are expressly qualified in their entirety by the risk factors and other cautionary statements included in OnSite Access' filings with the Securities and Exchange Commission.