Digital Lightwave Announces Enhanced Remote Network Testing; Single Application Controls and Monitors Multiple Embedded Test Devices.

CLEARWATER, Fla. -- Digital Lightwave, Inc. (Nasdaq:DIGL), a leading provider of optical networking technology and test instruments, today announced enhanced features in its remote network test software package used to optimize high-speed network performance. The new software features enable network providers to monitor and manage multiple Digital Lightwave devices from a centralized network operations center (NOC). The software embraces an application programming interface (API) thereby enabling integration with proprietary and industry-leading OSS (Operations Support System) solutions.

"We've brought the functionality of OSS monitoring and device management to our network embedded device platforms through an easy to use, single software interface," said Doyle Mills, Director of Product Marketing, Digital Lightwave. "Our evolution in new product and software functionality allows a complete system-style offering to our customers serving converging telecom and datacom markets."

The Digital Lightwave embedded products include the NIC EP (Network Information Computer, Embedded Platform), NAA IV (Network Access Agent), and OWM (Optical Wavelength Manager). The devices may be equipped with test interfaces for SONET, SDH, Ethernet, ATM and DWDM in order to support all common network interfaces.

The individual platforms have traditionally been provided with remote control user interface software. The new software features enable integration of all products into a coherent system controlled through a single user interface, thereby making it easier to turn up new circuits, perform routine maintenance, and troubleshoot.

Announcement Regarding Auditor Opinion 

Separately, Digital Lightwave, Inc. today announced that its financial statements for the year ended December 31, 2004, issued and filed on March 31, 2005, with the Securities and Exchange Commission in the Company's Annual Report on Form 10-K, contained a going concern qualification from its auditors. This announcement is made in compliance with Nasdaq's new Marketplace Rule 4350(b)(1)(B), which requires separate disclosure of the receipt of an audit opinion that contains a going concern qualification, and does not reflect any change or amendment to the financial statements issued on March 31, 2005.

About Digital Lightwave, Inc.

Based in Clearwater, Florida, Digital Lightwave, Inc. (the "Company") provides the global communications networking industry with products, technology and services that enable the efficient development, deployment and management of high-performance networks. Digital Lightwave's customers -- companies that deploy networks, develop networking equipment, and manage networks -- rely on its offerings to optimize network performance and ensure service reliability. The Company designs, develops and markets a portfolio of portable and network-based products for installing, maintaining and monitoring fiber optic circuits and networks. Network operators and telecommunications service providers use fiber optics to provide increased network bandwidth to transmit voice and other non-voice traffic such as internet, data and multimedia video transmissions. The Company provides telecommunications service providers and equipment manufacturers with product capabilities to cost-effectively deploy and manage fiber optic networks. The Company's product lines include: Network Information Computers, Network Access Agents, Optical Test Systems, and Optical Wavelength Managers. The Company's wholly owned subsidiaries are Digital Lightwave (UK) Limited, Digital Lightwave Asia Pacific Pty, Ltd., and Digital Lightwave Latino Americana Ltda.

Forward-Looking Statements

Statements in this press release, other than historical data and information constitute forward-looking statements that involve risks and uncertainties. The forward-looking statements in this press release are based upon management's beliefs, assumptions and expectations of the company's future operations and economic performance, taking into account currently available information. Forward-looking statements involve risks and uncertainties, some of which are not currently known to us. Accordingly, a number of factors could cause our actual results, performance, or achievements to be very different from the results, performance or achievements expressed or implied by such forward-looking statements, including but not limited to, the risk factors set forth in the company's filings with the Securities and Exchange Commission. Due to such uncertainties and risks, readers are cautioned not to place undue reliance on such forward-looking statements, which speak only as of the date hereof. Information in this press release may be superseded by more recent information or statements, which may be disclosed in later press releases, subsequent filings with the Securities and Exchange Commission, or otherwise.

Editor's Note: Digital Lightwave(R) is a registered trademark of Digital Lightwave, Inc.