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Transaction Systems Architects, Inc. To Release First Quarter 2006 Financial Results

Tuesday, January 17, 2006

This call is being webcast by Thomson/CCBN and can be accessed at Transaction Systems Architects Inc. web site at www.tsainc.com/investors. The web cast will be archived for 14 days after the teleconference at the same web address.

The webcast is also being distributed through the Thomson StreetEvents Network to both institutional and individual investors. Individual investors can listen to the call at www.fulldisclosure.com, Thomson/CCBN’s individual investor portal, powered by StreetEvents. Institutional investors can access the call via Thomson’s password-protected event management site, StreetEvents (www.streetevents.com).

Notes to editors

About Transaction Systems Architects Inc.
The Company’s software facilitates electronic payments by providing consumers and companies access to their money. Its products are used to process transactions involving credit cards, debit cards, secure electronic commerce, mobile commerce, smart cards, secure electronic document delivery and payment, checks, high-value money transfers, bulk payment clearing and settlement, and enterprise e-infrastructure. The Company’s solutions are used on more than 1,965 product systems in 84 countries on six continents. Visit Transaction Systems Architects Inc. at www.tsainc.com.