opnet
Press release

OPNET Technologies Inc. Schedules First Quarter Results Teleconference/WebCast for Monday, July 30, 2001

BETHESDA, MD -- July 17, 2001 -- OPNET Technologies, Inc. (Nasdaq: OPNT) will hold an investor conference call on Monday, July 30, 2001 at 5:00pm Eastern
Daylight Time to review financial results for the first quarter of fiscal 2002.

To listen to the OPNET investor conference call as it happens:

  • Call 800-670-3540 in the U.S. or 212-748-2785 for international callers (both are listen only), or
  • Use the webcast at www.opnet.com, or www.vcall.com (click on OPNT under "Today's Vcalls"). Investors are advised to go to the web site at least 15 minutes early to register, download, and install any necessary audio software.

To listen to the archived call:

  • Call the replay phone number at 800-633-8284 in the U.S. or 858-812-6440 for international callers. For replay, enter reservation number 19337249. The replay will be available from 7:00pm Eastern Daylight Time on July 30 until 7:00pm Eastern Daylight Time on August 2.
  • Alternatively, the webcast is available at www.opnet.com, or at www.vcall.com (search on "OPNT"). The call will be archived for 7 days.
The first quarter of fiscal 2002 financial results will be released after the market closes on Monday, July 30, 2001.

About OPNET Technologies, Inc.

OPNET Technologies, Inc. is the leading provider of intelligent network management software. The OPNET product suite combines predictive modeling and a comprehensive understanding of networking technologies to enable its customers to more effectively design and deploy networks, provision services, diagnose network and application performance problems, and predict the impact of network changes. For more information about the company and its products, visit www.opnet.com.

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Note to editors: The word OPNET is spelled with all upper-case letters.

OPNET Media Contact:
Margarita Castillo
OPNET Technologies, Inc.
(240) 497-3000
Media@opnet.com
www.opnet.com

OPNET Investor Relations:
Mel Wesley
OPNET Technologies
(240) 497-3000
ir@opnet.com
www.opnet.com